Circular Motion MCQ's

18:57:00 Unknown 1 Comments

A test from chapter 5 i.e Circular of Physics part 1. This is Free online test for FSc and Entry test Preparation for UET, NUST, FAST, GIKI, PIEAS, NFC, Punjab University, UHS, other Engineering Universities and Medical Colleges.

1. Which of the following is not directed along the axis of rotation ?

A) Angular displacement
B) Centripetal acceleration
C) Angular momentum
D) Angular acceleration

2. Two satellites A and B revolving around earth with orbital radius r and 2r respectively. They complete their rotation around earth in same period their angular velocities are in ratio:

A) 1:2
B) 2:1
C) 1:1
D) 1:4

3. The translational K.E of disc is 9 J its rotational K.E is:

A) 4.5
B) 6 J
C) 12 J
D) 5.4 J

4. A hoop is placed on a inclined plane of height 10m. As it moves down, its velocity just reaching bottom is:

A) 20 m/s
B) 10 m/s
C) 16 m/s
D) 100 m/s

5. Law of conservation of angular momentum is applicable on:

A) Diving
B) Gymnastics
C) Ice-skating
D) All of these

6. What would be the affect on orbital velocity of satellite if mass of satellite becomes four times:

A) 2 times
B) 4 times
C) 1/2 times
D) no effect

7. Geostationary satellite has angular speed

A) Greater than earth
B) Half to that of earth
C) Equal to earth
D) Equal to moon

8. The angle subtended by a semi circle at the center is:

A) Pi radian
B) Pi/2 radian
C) 2Pi radian
D) Pi/4 radian

9. Which satellite has greater orbital speed if rotated around earth

A) a satellite having higher altitude
B) Speed is independent of altitude
C) A satellite having lower altitude
D) none of these

10. A ball tied to a string is swung in a horizontal circle, the tension in the string is maximum at:

A) Top
B) Bottom
C) Midway
D) Same at each point