Question # 1

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

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Greater than

smaller than

Equal to

None of these

One radian is:

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Greater than one degree

Less than one degree

Equal to one degree

None of them

One radian is:

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Greater than one degree

Less than one degree

Equal to one degree

None of these

Centripetal acceleration is also called ______ acceleration:

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Tangential

Radial

Angular

None of them

When a body moves with a constant speed in a circle:

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No work is done on it

No acceleration is produced in the body

Velocity remains constant

None of these

Angular momentum is a:

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vector quantity

Imaginary quantity

Complex Quantity

Scalar Quantity

Direction of angular momentum is determined by:

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Right hand rule

Head to tail rule

Left hand rule

None of them

The instantaneous acceleration of a body moving with constant speed in a circle:

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Remains constant

Is called centripetal acceleration

Tangential acceleration

None of these

Conventionally the angular velocity is directed to an angle of:

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

When a body moves with a constant speed in a circle:

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No work is done on it

No acceleration is produced in the body

Velocity remains constant

None of these

The useful unit of angular replacement in SI unit is:

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Degree

Revolution

Radian

Metre

If a gymnast is sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will:

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Increase

Decrease

Remains constant

None of these

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

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8.1 X 10⁷N

625 N

6250 N

None of these

One radian is

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Greater than one degree

Less than one degree

Equal to one degree

None of these

One radian is:

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Greater than one degree

Less than one degree

Equal to degree

none of these

A rotating body tends to be slower, when its angular acceleration is:

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Positive

Negative

Zero

Infinity

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ECAT Physics Chapter 5 Circular Motion Online Test MCQs With Answers

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