Question # 1

Angular acceleration is produced by

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Power

Torque

Pressure

Force

The SI unit of angular momentum is

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J.S-2

J.S-1

J.S

J.m

When a body is whirled in a horizontal circle by means of string, the centripetal force is supplied by

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Mass of body

Velocity of a body

Tension in the string

Centripetal acceleration

A wheel of radius 50 cm having an angular speed of a rad /s have linear speed.

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1.5 m/s

3.5 m/s

2.5 m/s

4.5 m/s

Height of geo stationary orbit of the satellite above the earth is.

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300 km

250 km

400 km

None of these

If a rocket is accelerating upward with an acceleration of 2 g, an astronaut of weight, mg in the rocket shows apparent weight.

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Zero

Mg

2 mg

3 mg

A man of mass 5 kg is falling freely, the fore acting on it will be

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5 N

9.8 N

19.6 N

49 N

Time period of geostationary satellite of radius 'R' is

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1 hour

48 min

1 day

1 month

All point of the rigid body rotating about a fixed axis do not have same.

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Angular acceleration

Angular speed

speed

Angular displacement

The formula of centripetal acceleration is

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2 radian = ____

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2 m

4 m

57.3 m

114.6 m

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

The weight of the body at the centre of earth is

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Maximum

Minimum

Zero

Infinite

Einstein's theory gives us the physical picture of how the

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Body moves

Gravity works

Moment of inertia produced

Weightlessness creates

A man of 1 kg is freefalling. The force of gravity is

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1 N

9.8 N

0.5 N

Zero

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

The equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

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Physics Fsc Part 1 Chapter 5 Online Test MCQs With Answers

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