Here are the MCQs of physics 1st year chapter 1 for F.Sc Part I students. You can read online all chapter mcqs Notes for 1st year here. The other chapters MCQs notes of Physics are listed below.these are guess mcqs. 100% working.
But in future we
provide you the list of all chapters mcqs physics. So follow us for
latest information. These are solved MCQs of physics 1st year chapter 5.These notes are prepape by zainsHub Notes.
Physics 1st year MCQs
The mcqs are important and according to past papers and the chances of
appearing in your next exams. You may also like the following notes:
Physics chapter 1 Mcqs and Shorts
Physics chapter 2 Mcqs and Shorts
Physics chapter 3 Mcqs and Shorts
Physics chapter 4 Mcqs and Shorts
Physics chapter 5 Mcqs and Shorts
Physics chapter 6 Mcqs and Shorts
Physics chapter 7 Mcqs and Shorts
Physics chapter 8 Mcqs and Shorts
Physics chapter 9 Mcqs and Shorts
Physics chapter 10 Mcqs and Shorts
Physics chapter 11 Mcqs and Shorts
Unit 5 Circular Motion
1. 1 revolution:a) 57°
b) 90°
c) 180°
d) 360°
2. One radian is equal to.
a) 67.3o
b) 57.3o
c) 87.3o
d) 60o
a) 67.3o
b) 57.3o
c) 87.3o
d) 60o
3. The SI unit of angular momentum is Js. It can also be expressed as:
a) kgms−1
b) kgm2 s−1
c) kgm2 s−2
d) kgm−2 −1
4. The rate of change of angular displacement is called:
a) Angular displacement
b) Angular velocity
c) Angular acceleration
d) Torque
5. Revolution/minute is the unit for
a) Angular displacement
b) Angular acceleration
c) Angular velocity
d) Time
6. Time rate of change of angular velocity is called:
a) Angular momentum
b) Angular displacement
c) Angular acceleration
d) None of these
7. The angular acceleration is produced by:
a) Momentum
b) Torque
c) Pressure
d) Power
8. A particle is moving in a circle with constant speed. The direction of centripetal force will be:
a) Along the tangent
b) Along radius towards center
c) Along radius away from center
d) Changing with motion
10. Moment of inertia is measured in:
a) 𝑘𝑔 𝑚2
b) 𝑘𝑔 𝑚−2
c) 𝑁 𝑠
d) 𝑟𝑎𝑑/𝑠
a) kgms−1
b) kgm2 s−1
c) kgm2 s−2
d) kgm−2 −1
4. The rate of change of angular displacement is called:
a) Angular displacement
b) Angular velocity
c) Angular acceleration
d) Torque
5. Revolution/minute is the unit for
a) Angular displacement
b) Angular acceleration
c) Angular velocity
d) Time
6. Time rate of change of angular velocity is called:
a) Angular momentum
b) Angular displacement
c) Angular acceleration
d) None of these
7. The angular acceleration is produced by:
a) Momentum
b) Torque
c) Pressure
d) Power
8. A particle is moving in a circle with constant speed. The direction of centripetal force will be:
a) Along the tangent
b) Along radius towards center
c) Along radius away from center
d) Changing with motion
10. Moment of inertia is measured in:
a) 𝑘𝑔 𝑚2
b) 𝑘𝑔 𝑚−2
c) 𝑁 𝑠
d) 𝑟𝑎𝑑/𝑠
11. The angular momentum is given by:
a) mω
b) ω × F
c) r × F
d) r × p
12. The period of a circular motion is given by:
a) mω
b) ω × F
c) r × F
d) r × p
12. The period of a circular motion is given by:
a) T = rV
b) T = ωw
c) T = 2𝜋ω
d) T = 2𝜋/ω
13. The direction of linear velocity of body moving in a circle is.
a) Along the axis of rotation
b) T = ωw
c) T = 2𝜋ω
d) T = 2𝜋/ω
13. The direction of linear velocity of body moving in a circle is.
a) Along the axis of rotation
b) Along the tangent
c) Directed towards the center
c) Directed towards the center
d) Directed away from the center
14. The circumference subtends an angle.
a) Radian
b) 2𝜋 radian
c) 𝜋/2 radian
d) 4𝜋 radian
16. When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by.
a) Mass of a body
b) Velocity of body
c) Tension in the string
d) None of these
17. Centripetal force performs
a) Maximum work
b) Minimum work
c) Negative work
d) No work
18. When a body moves in a circle of radius „r‟ with linear speed „V‟, its centripetal force is.
a) mv / r2
b) mv / r
c) mv2 / r
d) mv2 / r2
14. The circumference subtends an angle.
a) Radian
b) 2𝜋 radian
c) 𝜋/2 radian
d) 4𝜋 radian
16. When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by.
a) Mass of a body
b) Velocity of body
c) Tension in the string
d) None of these
17. Centripetal force performs
a) Maximum work
b) Minimum work
c) Negative work
d) No work
18. When a body moves in a circle of radius „r‟ with linear speed „V‟, its centripetal force is.
a) mv / r2
b) mv / r
c) mv2 / r
d) mv2 / r2
19. The angular acceleration of a body is directed
a) Towards the center of the circle
b) Away from the center of the circle
c) Along the tangent to the circle
d) Along the axis of rotation
20. The magnitude of the centripetal force on a mass m moving with angular speed 𝜔 in a circle of radius r is:
a) 𝑚𝑟2𝜔
b) 𝑚𝑟2/𝜔
c) 𝑚𝑟 𝜔
d) 𝑚𝑟 𝜔2
21. The dimension of angular acceleration is:
a) 𝑇−1
b) 𝑇−2
c) 𝑇−3
d) 𝐿𝑇−2
22. A gymnast sitting on stool with his arms out stretched lowers his arms:
a) The angular speed decreases
b) The angular speed increases
c) Neither increases nor decrease
d) Both increases and decreases
23. When torque acting on a system is zero, which of the following will be constant:
a) Linear momentum
b) Force
c) Angular momentum
d) Impulse
25. Unit of angular velocity in SI unit is:
a) 𝑅𝑎𝑑./𝑠
b) 𝑚/𝑠
c) 𝑑𝑒𝑔𝑟𝑒𝑒/𝑠
d) 𝑅𝑒𝑣𝑜𝑙𝑢𝑡𝑖𝑜𝑛/𝑠
26. Angular speed of daily rotation of earth is:
a) 2𝜋 𝑟𝑎𝑑./𝑠
b) 𝜋 𝑟𝑎𝑑./𝑠
c) 4𝜋 𝑟𝑎𝑑./𝑠
d) 7.3 × 10−5 𝑟𝑎𝑑./𝑠
28. The minimum velocity necessary to put a satellite into orbit is:
a) 7.1 𝑘𝑚 𝑠−1
b) 7.3 𝑘𝑚 𝑠−1
c) 7.9 𝑘𝑚 𝑠−1
d) 8.9 𝑘𝑚 𝑠−1
29. The apparent weight of a man in an ascending lift moving with acceleration “a”:
a) Increases
b) Decreases
c) Remains constant
d) Becomes zero
30. The apparent weight of a man in a lift moving down with an acceleration of 9.8 𝑚 𝑠−2 is:
a) Zero
b) 9.8 N
c) 19.6 N
d) Infinity
31. Which electromagnetic wave are used as a medium in satellite communication system:
a) Microwaves
b) Radio waves
c) Infrared waves
d) Ultraviolet waves
32. The minimum number of communication satellites required to cover the whole earth is:
a) 4
b) 3
c) 2
d) 5
a) Towards the center of the circle
b) Away from the center of the circle
c) Along the tangent to the circle
d) Along the axis of rotation
20. The magnitude of the centripetal force on a mass m moving with angular speed 𝜔 in a circle of radius r is:
a) 𝑚𝑟2𝜔
b) 𝑚𝑟2/𝜔
c) 𝑚𝑟 𝜔
d) 𝑚𝑟 𝜔2
21. The dimension of angular acceleration is:
a) 𝑇−1
b) 𝑇−2
c) 𝑇−3
d) 𝐿𝑇−2
22. A gymnast sitting on stool with his arms out stretched lowers his arms:
a) The angular speed decreases
b) The angular speed increases
c) Neither increases nor decrease
d) Both increases and decreases
23. When torque acting on a system is zero, which of the following will be constant:
a) Linear momentum
b) Force
c) Angular momentum
d) Impulse
25. Unit of angular velocity in SI unit is:
a) 𝑅𝑎𝑑./𝑠
b) 𝑚/𝑠
c) 𝑑𝑒𝑔𝑟𝑒𝑒/𝑠
d) 𝑅𝑒𝑣𝑜𝑙𝑢𝑡𝑖𝑜𝑛/𝑠
26. Angular speed of daily rotation of earth is:
a) 2𝜋 𝑟𝑎𝑑./𝑠
b) 𝜋 𝑟𝑎𝑑./𝑠
c) 4𝜋 𝑟𝑎𝑑./𝑠
d) 7.3 × 10−5 𝑟𝑎𝑑./𝑠
28. The minimum velocity necessary to put a satellite into orbit is:
a) 7.1 𝑘𝑚 𝑠−1
b) 7.3 𝑘𝑚 𝑠−1
c) 7.9 𝑘𝑚 𝑠−1
d) 8.9 𝑘𝑚 𝑠−1
29. The apparent weight of a man in an ascending lift moving with acceleration “a”:
a) Increases
b) Decreases
c) Remains constant
d) Becomes zero
30. The apparent weight of a man in a lift moving down with an acceleration of 9.8 𝑚 𝑠−2 is:
a) Zero
b) 9.8 N
c) 19.6 N
d) Infinity
31. Which electromagnetic wave are used as a medium in satellite communication system:
a) Microwaves
b) Radio waves
c) Infrared waves
d) Ultraviolet waves
32. The minimum number of communication satellites required to cover the whole earth is:
a) 4
b) 3
c) 2
d) 5
33. The critical speed of an artificial satellite is:
a) 6 Kms-1
b) 8.1 Kms-1
c) 7.9 Kms-1
d) 8 ms-1
34. Geo-stationary satellite completes one rotation around earth in.
a) 3 hours
b) 6 hours
c) 12 hours
d) 24 hours
35. In case planets the necessary acceleration is provided by.
a) Gravitational force
b) Frictional force
c) Coulomb force
d) Centripetal force
36. The acceleration of a freely falling body is:
a) Zero
b) 9.8 ms-2
c) 32 ms-2
d) -9.8 ms-2
37. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is:
a) mg
b) mg – ma
c) mg + ma
d) mg – ma
38. If a body of mass 10 kg is allowed to fall freely, its weight becomes.
a) zero
b) 98N
c) 9.8N
d) 10N
39. Pull of earth on a mass of 20 kg on the surface of the earth is
a) 20 N
b) 196 N
c) 19.6 N
d) 1960 N
a) 6 Kms-1
b) 8.1 Kms-1
c) 7.9 Kms-1
d) 8 ms-1
34. Geo-stationary satellite completes one rotation around earth in.
a) 3 hours
b) 6 hours
c) 12 hours
d) 24 hours
35. In case planets the necessary acceleration is provided by.
a) Gravitational force
b) Frictional force
c) Coulomb force
d) Centripetal force
36. The acceleration of a freely falling body is:
a) Zero
b) 9.8 ms-2
c) 32 ms-2
d) -9.8 ms-2
37. A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is:
a) mg
b) mg – ma
c) mg + ma
d) mg – ma
38. If a body of mass 10 kg is allowed to fall freely, its weight becomes.
a) zero
b) 98N
c) 9.8N
d) 10N
39. Pull of earth on a mass of 20 kg on the surface of the earth is
a) 20 N
b) 196 N
c) 19.6 N
d) 1960 N
Answerkey
