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1st Year Physics Important Mcqs for The Exam 2013

# 1st Year Physics Important Mcqs For The Exam 2013

## 1st Year Physics Important Mcqs For The Exam 2013

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**MSCQs of Chapter 1 – The Scope of Physics **

**Fill in the Blanks**

1. Physical sciences and biological sciences are the two branches of __________.

2. The branch of physics, which deals with the interaction of matter and energy, is called __________.

3. Ibn-e-Sina was famous in the field of __________.

4. Medical text book Al-Qannun-Fil-Tib was written by __________.

5. In C.G.S system the unit of force is __________.

6. Unit of luminous intensity is __________.

7. Dimension of volume is __________.

8. Dimension of linear momentum is __________.

9. 16.7 contain __________ significant figures.

10. Logarithm was invented by __________.

11. The biological science deals with __________.

12. The class of science, which deals with the properties and behaviour of non-living matter is called __________ science.

13. Chinese for the first time manufactured __________.

14. Egyptian used to measure the flood level in the river __________.

15. The people of Euphrate andTigrisvalleys were aware of calendar and had the knowledge of __________.

16. The people of indus valley were pioneers of __________ system.

17. There are two main branches of physics, namely classical physics and __________ physics.

18. The founder of analytical algebra was __________.

19. The author of Alsh-Shifa was __________.

20. A high precision device for measuring the time with tremendously large accuracy is the __________.

21. __________ is the unit of thermodynamic temperature.

22. Ampere is the unit of __________.

23. __________ is the amount of substance of a system which contain as many elementary entities as there are atom in 0.012kg of carbon 12.

24. The word dimension is used to denote the __________ of a physical quantity.

25. The dimension of area is __________.

26. The dimension of linear velocity is __________.

27. The dimension of acceleration is __________.

28. The dimension of torque is __________.

29. Dimension of universal gravitational constant (G) is __________.

30. A number 4.71 contained __________ significant figures.

31. Some concepts of static electricity were introduced by __________.

32. Electromagnetic wave theory was proposed by __________.

33. The name of Pakistani physicist renowned all over the world for his nuclear research is __________.

34. The dimension of force is __________.

35. Kelvin the unit of thermodynamic temperature is 1/273.16 of the thermodynamic temperature of __________ freezing point of water.

**MSCQs of Chapter 2 – Scalars and Vectors **

**Fill in the Blanks**

1. A physical quantity, which can be completely specified by its magnitude only, is called __________.

2. A physical quantity, which can be completely described by its magnitude and direction, is called __________.

3. Displacement is a __________ quantity.

4. Power is a __________ quantity.

5. Two vectors are __________ when they have same magnitude and same direction.

6. The magnitude of vector will always be __________.

7. In parallelogram law of vector addition the resultant of two vectors is represented by __________ of the parallelogram.

8. Normally law of cosine is used to determine the __________ of the resultant vector.

9. Law of __________ is normally used to determine the direction of resultant vector.

10. The magnitude of __________ will always be equal to unity.

11. The rectangular unit vectors are mutually __________ to each other.

12. The dot product of two vectors is a __________.

13. The __________ product of two vectors is a vector.

14. The scalar product can be defined as that it is the product of magnitude of two vectors and __________ of the angle between them.

15. The vector product can be defined as that it is the product of the magnitude of two vectors and __________ of the angle between them.

16. The dot product will not obey the __________ law for vector multiplication.

17. The cross product will not obey the __________ law for the vector multiplication.

18. A vector, which can be displaced parallel to itself and applied at any point, is called __________ vector.

19. Null vector can be obtained by __________ a vector with its negative vector.

20. Zero vectors have __________ particular direction.

21. If two vectors are __________ to each other then their dot product is zero.

22. If two vectors are parallel to each other then their __________ product is zero.

23. If , then the magnitude of either of the two vector is __________.

24. The direction of resultant vector in a vector product can be determined by the __________ rule.

25. The magnitude of the resultant of two vectors can be __________ than the sum of the magnitudes of individual vectors.

26. The magnitude of __________ vector will always be zero.

27. __________.

28. __________.

29. Torque is the __________ product of force and force arm.

30. __________ is the dot product of force and velocity.

31. A vector, in any given direction whose magnitude is one is called __________.

32. The set of unit vectors along x, y and z axes are called __________ unit vectors.

33. If the magnitude of the resultant of two vectors equal in magnitude is the same, then the angle between the two vectors is __________.

34. If __________.

35. Two forces, one of 6N and the other of 8N, act on a point at angle 90° with each other, the magnitude of resultant force is __________.

**MSCQs of Chapter 3 – Motion **

**Fill in the Blanks**

1. The change of position of a body in a particular direction is called its __________.

2. The change of displacement of a body with respect to time is called its __________.

3. The rate of change of position in a particular direction is called the __________ of the body.

4. The total change in displacement divided by the total change in time of a body is called its __________.

5. The acceleration of a body is uniform when average and instantaneous values of the acceleration are __________.

6. If the body moves towards earth, neglecting air resistance and small changes in acceleration with altitude. This body is referred to as free falling body and its motion is called __________.

7. __________ is an agent which changes or tends to change the state of the body.

8. __________ is the property of the matter due to which it will try to remain in the same state.

9. When a constant force is applied on a body then it will start to move with constant __________.

10. Mass of the body is the measure of __________.

11. Tension in string is a __________which will be produced in it whenever it is subjected to pull.

12. The quantity of motion produced in a body is called its __________.

13. The momentum of a body is defined as the product of mass and __________ of the body.

14. A system in which the particles of the system may exert some force one upon the other because of their collision but no external force can be applied on them is called __________ system of interacting bodies.

15. The collision between the two bodies is the __________ if total momentum as well as the kinetic energy of the system remain the same.

16. In inelastic collision the kinetic energy of the system will __________ conserved.

17. If a massive body will collide elastically with a lighter body at rest then the lighter body will start to move with a velocity equal to __________ first body.

18. The force, which opposes the motion of body on a surface, is called __________.

19. The friction is due to the __________ of the material of the surfaces in contract.

20. The force of friction always acts __________ to the surfaces in contact.

21. The direction of the friction will always be __________ to the direction of motion.

22. The friction within a fluid is called its __________.

23. The friction is said to be __________ when the body slides over the other.

24. Sliding friction is __________ than the rolling friction.

25. The ratio of limiting friction to the normal reaction acting between two surfaces in contact is called __________.

26. In bicycles the sliding friction is replaced by __________.

27. On frictionless inclined plane the acceleration of the body is __________ of its mass.

28. On frictionless inclined plane where a = gsinq if q = 90° then a = __________.

29. On an inclined plane the ‘wcosq’ will always be equal to __________.

30. According to the second law of motion average force applied on the body is equal to its rate of change of __________.

31. __________ friction arises when one solid object is set into motion across the surface of another solid body.

32. __________ friction results when a solid object moves through fluid.

33. 1 newton = __________ dynes.

34. The acceleration produced in the body if the applied force is equal to the weight of the body is __________.

35. The law of conservation of momentum is equivalent to theNewton’s __________ law of motion.

36. The motion of jet plane and rocket are based on conservation of __________.

37. When the friction between the surface of an inclined plane and a body on it is equal to the component of the weight of the body __________ to the plane, then the body remains at rest on the inclined plane.

38. The acceleration of body on a smooth inclined plane is maximum when the plane is making an angle of __________ with the horizontal.

39. The terminal velocity of a spherical body in fluid is inversely proportional to the __________ of the body.

40. In fluid the acceleration of spherical body becomes zero when the force of gravity is equal to the __________ force offered by the fluid.

**MSCQs of Chapter 4 – Motion in Two Dimensions **

**Fill in the Blanks**

1. The motion of the object along a straight line is called __________.

2. The motion of the object along a curved path is called __________.

3. Projectile motion is the example of the motion of the body in __________ dimension.

4. In projectile motion the object is purely under the influence of __________.

5. In projectile motion the acceleration due to gravity (g) will always be taken as __________.

6. During the projectile motion the horizontal component of its velocity will __________.

7. During the projectile motion the vertical component of its velocity is always __________.

8. The path of the projectile is a __________ path.

9. During projectile motion the acceleration along horizontal direction is __________.

10. In projectile the acceleration along vertical is always __________

11. In projectile the acceleration along vertical direction is equal to the __________.

12. The expression for the time to reach the maximum height of the projectile is __________.

13. The expression for the __________ is 2Vosinq/g.

14. The expression for the horizontal range of the projectile is __________.

15. The expression for the maximum range of the projectile is __________.

16. For the maximum horizontal range of the projectile the angle of elevation must be __________.

17. The horizontal range of the projectile is directly proportional to the square of __________.

18. The horizontal range of the projectile is directly proportional to the sine of the twice of __________.

19. The expression for the __________ of the projectile is ax – ½ bx2.

20. In projectile the small angle of elevation produces __________ trajectory.

21. In projectile the __________ angle of the elevation produces the high trajectory.

22. If the angle of elevation of the projectile is 90° then its horizontal range is __________.

23. For the projectile with __________ trajectory their time of flight will be short.

24. If projectile has some range at an angle of elevation of 15° then it range will be same when the angle of elevation is __________.

25. At maximum height the vertical component of the velocity of the projectile is __________.

26. Horizontal motion with constant velocity and vertical motion with constant acceleration is called __________.

27. If a particle is moving with constant speed along a circle then its motion is uniform __________.

28. The angle subtended by a particle with a centre of the circle when it is moving from one point to another on its circumference is called angular __________.

29. The unit of angular shift is __________.

30. The angular shift per unit time of the particle is called its angular __________.

31. The direction of angular velocity can be determined by __________ rule.

32. The unit of angular velocity is __________.

33. If a particle covers equal angular displacement in equal intervals of time then its angular velocity is __________.

34. The rate of change of __________ is called angular acceleration.

35. The velocity of the particle tangent to its circular path is called __________.

36. In circular motion the time period and angular velocity of a particle are __________ proportional to each other.

37. If a particle is moving with constant speed along the circumference of a circle then the acceleration produced in it is called __________.

38. The direction of centripetal acceleration will always be towards the __________ of the circle.

39. Centripetal force is also called __________ force.

40. The tangential component of acceleration arises when the speed of the particle is __________.

41. In circular motion the centripetal component of acceleration arises when the __________ is changed.

42. Centripetal and tangential acceleration are always __________ to each other.

43. When an object moves around the circular track, the centripetal force is provided by __________ force.

**MSCQs of Chapter 5 – Torque, Angular Momentum and Equilibrium**

MSCQs of Chapter 7 – Work, Energy and Power MSCQs of Chapter 7 – Work, Energy and Power

Fill in the Blanks

1. The nature of work is positive when the force and displacement are in the __________ direction.

2. The dot product of force and velocity is called __________.

3. Work is __________ product of force and displacement.

4. Power is a __________ quantity.

5. Work is a __________ quantity.

6. When the force and displacement are in the same direction then the work is __________.

7. When the force and displacement are in the same direction then the work is __________.

8. The ability of a body to perform the work is called its __________.

9. The rate of doing work of a body is called its __________.

10. Work energy equation is simply the law of conservation of __________.

11. One joule is equal to __________ erg.

12. The unit of power is __________.

13. The unit of energy of elementary particles and atoms is __________.

14. The energy possessed by a body by the virtue of its motion is called the __________ energy.

15. The potential energy of a body is due to its change of __________.

16. The work done against the gravitation field is always __________.

17. The law of conservation of energy states that __________ can neither be created nor destroyed but it can changed its form.

18. The rate of change of momentum multiplied by displacement is called __________.

19. Work done in the gravitation field is __________ of the path followed.

20. Work done in the gravitation field along a closed path is equal to __________.

21. The source of tidal energy is the rotation of the earth around the __________.

22. The source of geothermal energy is the __________ in the earth’s interior.

23. The source of nuclear energy is __________ in heavy nucleus.

24. Einstein mass energy equation is E = __________.

25. The unit of energy is the same as the unit of __________.

26. The dimensions of work are __________.

27. ML2T-3 are the dimensions of __________.

28. The rate of expenditure of energy is called __________.

29. The amount of work done in lifting a body from the surface of the earth to the zero point is called __________ energy.

30. One horsepower is equal to __________ watt.

31. One horsepower is equal to __________ ft.lb/s

32. The expression for absolute gravitational potential energy is __________.

33. 1 electron volt = joule.

34. 1 giga watt (GW) = __________ W.

35. 1 Kilowatt hour (1kWh) = __________ joules.

sely p�ri����he __________ of the radius of the earth.

24. If the mass of earth becomes four times then the value of ‘g’ will be __________.

25. The acceleration due to gravity on moon is __________ the acceleration due to gravity on the surface of the earth.

26. Acceleration due to gravity at the centre of the earth is __________.

27. The weight of a body at the pole is __________ than at equator.

28. The gravitational pull at equator is __________ than at poles.

29. The force required to prevent a body from falling or accelerating in a frame of reference is called the __________ of the body.

30. An astronaut in a satellite orbiting around the earth experiences a state of __________ because the satellite orbiting with a centripetal acceleration equal to ‘g’.

31. Artificial gravity is produced in the satellite to overcome the __________ in the satellite.

32. Artificial gravity is produced in the satellite by __________ it about its own axis.

33. The value of the average density of the earth is __________ kg/m3.

34. The dimension of gravitation constant is __________.

35. The expression for the frequency of rotation of the satellite to produce artificial gravity is __________.

Fill in the Blanks

1. The nature of work is positive when the force and displacement are in the __________ direction.

2. The dot product of force and velocity is called __________.

3. Work is __________ product of force and displacement.

4. Power is a __________ quantity.

5. Work is a __________ quantity.

6. When the force and displacement are in the same direction then the work is __________.

7. When the force and displacement are in the same direction then the work is __________.

8. The ability of a body to perform the work is called its __________.

9. The rate of doing work of a body is called its __________.

10. Work energy equation is simply the law of conservation of __________.

11. One joule is equal to __________ erg.

12. The unit of power is __________.

13. The unit of energy of elementary particles and atoms is __________.

14. The energy possessed by a body by the virtue of its motion is called the __________ energy.

15. The potential energy of a body is due to its change of __________.

16. The work done against the gravitation field is always __________.

17. The law of conservation of energy states that __________ can neither be created nor destroyed but it can changed its form.

18. The rate of change of momentum multiplied by displacement is called __________.

19. Work done in the gravitation field is __________ of the path followed.

20. Work done in the gravitation field along a closed path is equal to __________.

21. The source of tidal energy is the rotation of the earth around the __________.

22. The source of geothermal energy is the __________ in the earth’s interior.

23. The source of nuclear energy is __________ in heavy nucleus.

24. Einstein mass energy equation is E = __________.

25. The unit of energy is the same as the unit of __________.

26. The dimensions of work are __________.

27. ML2T-3 are the dimensions of __________.

28. The rate of expenditure of energy is called __________.

29. The amount of work done in lifting a body from the surface of the earth to the zero point is called __________ energy.

30. One horsepower is equal to __________ watt.

31. One horsepower is equal to __________ ft.lb/s

32. The expression for absolute gravitational potential energy is __________.

33. 1 electron volt = joule.

34. 1 giga watt (GW) = __________ W.

35. 1 Kilowatt hour (1kWh) = __________ joules.

sely p�ri����he __________ of the radius of the earth.

24. If the mass of earth becomes four times then the value of ‘g’ will be __________.

25. The acceleration due to gravity on moon is __________ the acceleration due to gravity on the surface of the earth.

26. Acceleration due to gravity at the centre of the earth is __________.

27. The weight of a body at the pole is __________ than at equator.

28. The gravitational pull at equator is __________ than at poles.

29. The force required to prevent a body from falling or accelerating in a frame of reference is called the __________ of the body.

30. An astronaut in a satellite orbiting around the earth experiences a state of __________ because the satellite orbiting with a centripetal acceleration equal to ‘g’.

31. Artificial gravity is produced in the satellite to overcome the __________ in the satellite.

32. Artificial gravity is produced in the satellite by __________ it about its own axis.

33. The value of the average density of the earth is __________ kg/m3.

34. The dimension of gravitation constant is __________.

35. The expression for the frequency of rotation of the satellite to produce artificial gravity is __________.

**chapter 6**

**Fill in the Blanks**

1. According to the law of gravitation, every body in the universe attracts every other body with a force that is directly proportional to the __________ and inversely proportional to the square of the distance between their centres.

2. If the distance between two bodies is doubled, the gravitational force between them decreases to __________ of its former value.

3. If the distance between two bodies is halved, the force of attraction between them increases to __________ its former value.

4. The acceleration due to gravity is inversely proportional to the __________ of the distance from centre of earth.

5. The force of attraction, which the earth exerts on a body, is called __________.

6. Spring balance is used to determine __________ of a body.

7. The point of body at which whole weight of the body seems to act is called __________.

8. If the force acting on a body is equal to its weight then the acceleration produced in the body is equal to __________.

9. The centre of gravity of a body of rectangular shape is the point where its __________ intersect each other.

10. __________ is the centre of solar system.

11. The distance from the centre of the earth to the centre of the moon is called __________.

12. The time taken by the earth to complete one revolution around the sun is __________.

13. The direction of weight is always toward the centre of the __________.

14.Newtonmade the hypothesis that every body in the universe __________ the other body.

15. The moon is freely falling to __________.

16. The time taken by the moon to complete one revolution around the earth is __________.

17. The acceleration of the moon is __________.

18. The moon’s orbit is about __________.

19. Acceleration due to gravity decreases at __________ rate for a point above the surface of earth then for the same point below the surface of the earth.

20. Weight of a body is a __________ quantity.

21. The __________ is responsible for the motion of the planets around the sun.

22. Artificial gravity is produced in a satellite by spinning its own __________.

23. The value of ‘g’ is inversely proportional to the __________ of the radius of the earth.

24. If the mass of earth becomes four times then the value of ‘g’ will be __________.

25. The acceleration due to gravity on moon is __________ the acceleration due to gravity on the surface of the earth.

26. Acceleration due to gravity at the centre of the earth is __________.

27. The weight of a body at the pole is __________ than at equator.

28. The gravitational pull at equator is __________ than at poles.

29. The force required to prevent a body from falling or accelerating in a frame of reference is called the __________ of the body.

30. An astronaut in a satellite orbiting around the earth experiences a state of __________ because the satellite orbiting with a centripetal acceleration equal to ‘g’.

31. Artificial gravity is produced in the satellite to overcome the __________ in the satellite.

32. Artificial gravity is produced in the satellite by __________ it about its own axis.

33. The value of the average density of the earth is __________ kg/m3.

34. The dimension of gravitation constant is __________.

35. The expression for the frequency of rotation of the satellite to produce artificial gravity is __________.

**Fill in the Blanks**

1. A body is said to be in equilibrium if it is at rest or is moving with __________ velocity.

2. If a body is moving with uniform velocity then the body is said to be in __________ equilibrium.

3. For the transnational equilibrium the net force acting on the body must be __________.

4. For the rotational equilibrium, the net torque acting on the body must be __________.

5. The body is said to be in complete equilibrium if __________ acceleration as well as angular __________ is zero.

6. According to the first condition of equilibrium the algebraic sum of all the forces acting on a body must be equal to __________.

7. If the algebraic sum of all torque acting on a body is equal to zero then the body will be in __________ equilibrium.

8. The magnitude of torque is equal to the product of magnitude of force and its __________.

9. The unit of torque is SI system is __________.

10. The vector product of force and displacement is known as __________.

11. The clockwise torque is taken as __________ torque.

12. If the lines of action of the two forces acting on the body are not same then the body will be in __________ equilibrium.

13. The physical quantity, which tends to rotate a body, is called __________.

14. The angular momentum of a body is conserved if the net __________ on it is zero.

15. The force which cannot be replaced by a single equivalent force are said to form a __________.

16. __________ is defined as the time rate of change of angular momentum.

17. In the system international the units of angular momentum are __________.

18. The angular momentum of an isolated system is __________.

19. A body is said to be in __________ equilibrium, if the net force on it is zero.

20. If the net torque on a body is zero then the body is said to be __________ equilibrium.

21. A __________ body is that in which different particles always maintain the same position relative to each other, whether the body is at rest or in motion.

22. In rotational motion, different particles of the body perform circular motion and the centers of all these circular orbits lie along a straight line called the __________.

23. If a rigid body rotates with a constant angular velocity w, then different particles of the body perform uniform circular motion with the __________ angular velocity but __________ linear velocities.

24. The moment of inertia of a rigid body about a given axis of rotation is equal to the sum of the products of the mass of each particle of the body and the square of its __________ from the given axis.

25. The __________ of a rigid body about a given axis of rotation is given by I = Smr2 where ‘m’ is the mass of any particle of the body situated at a distance ‘r’ from the axis.

26. The angular momentum of a particle is defined as the __________ product of the position vector and the linear momentum of the particle.

27. The angular momentum L of a particle is given in terms of m, v, r and q as L = __________.

28. The direction of the angular momentum of a particle lies along the __________ to the plane formed by the vectors and .

29. The angular momentum of a particle can be expressed in the determinant form as = __________.

30. The direction of the angular momentum of a particle moving with velocity v in a circular orbit of radius r is __________ to the direction of the angular velocity w which lies along the axis of rotation.

31. The centre of gravity of uniform circular hoop is at the __________ of the hoop.

32. The angular momentum is associated with __________ motion.

33. The total angular momentum is associated with __________ motion.

34. The total angular momentum of a system of particles is __________ if the net external torque acting on the system is zero..

35. The time rate of charge of angular momentum of a body is equal to the __________.

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