ECAT Pre Computer Science Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 5 Circular Motion

Try The MCQ's Test For ECAT Physics Chapter 5 Circular Motion

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ECAT Physics Chapter 5 Circular Motion

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Question # 1

When body moves along a circular path with constant speed, it has an acceleration, which is always directed;

Question # 2

Circular motion is an example of motion in:

Question # 3

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of

Question # 4

A stone is tied to the end of a 20 cm along string is whirled in a horizontal circle.
if centripetal acceleration is 9.8 m/sec2, then its angular velocity in rad/sec is:

Question # 5

Conventionally the angular velocity is directed at an angle of

Question # 6

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

Question # 7

When angular acceleration is positive, the body rotates:

Question # 8

______ plays the same role during angular motion as played by the mass in linear motion

Question # 9

A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 m/sec2in this case, find radius of the circular path:

Question # 10

One radian is equal to:

Question # 11

Centripetal acceleration is also called ______ acceleration:

Question # 12

Moment of linear momentum is called.

Question # 13

In rotational motion, analogue of force F us called:

Question # 14

Which of the following pairs does not have identical dimensions?

Question # 15

Direction of angular momentum is determined by:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.
A. Greater than
B. smaller than
C. Equal to
D. None of these
2 The rear wheels of an automobile are rev/sec which is reduced to 38 rad/sec in 5 seconds when brakes are applied. Its angular acceleration is:
A. 5 rad/sec2
B. -10 rav/sec2
C. -10 rad/sec2
D. -5 rav/sec2
3 If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will
A. Increase
B. Decrease
C. Remain constant
D. None of these
4 The number of countries who manage the largest satellite system is:
A. 3
B. 24
C. 126
D. 200
5 One radian is
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of these
6 Einstein's theory about gravity if better than Newton's because it gave explanation of:
A. Inverse square law
B. Bending of light
C. Both A and B
D. None of above
7 A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:
A. 0.05 m
B. 0.08 m
C. 0.8 m
D. 0.008 m
8 The useful unit of angular replacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
9 When a body moves along a circular path with constant speed, it has an acceleration, which is always directed
A. Along the tangent
B. Towards the centre
C. Away from the centre
D. None of them
10 Conventional the angular Velocity is Directed at an angle of:
A. 90° to the axis of rotation
B. 30° to the axis of rotation
C. 0° to the axis of rotation
D. None of above

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