Question # 1

The shortest distance between two points is called

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Distance

Amplitude

Displacement

Is a number

In the absence of external force, the change in momentum is.

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Zero

Constant

Decreasing

Increasing

The rate of change of momentum is equal to

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Impulse

Torque

Velocity

Force

If a mass of a body is doubled, then acceleration becomes.

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Double

Half

One fourth

Constant

A collision in which K.E. of the system is not conserved is

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Elastic collision

Inelastic collision

3rd low of motion

None of these

The acceleration of a projectile along x axis is.

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Zero

Increase

Decrease

Equal to 'g'

The dimensional unit of impulse is.

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[MLT]

[MLT-1]

[ML-1T-1]

[M-1L-1T-1]

Average acceleration is a

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Scalar quantity

Vector quantity

(-) ve quantity

None of these

A force applied on a body produces acceleration in

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Opposite direction

perpendicular direction

Its own direction

In any direction

A mass of 1 kg is freely falling. The force of gravity is.

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1 N

9.8 N

0.5 N

Zero

the acceleration along x -axis direction in case of projectile is.

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Zero

Equal to gravity

Maximum

Constant

The path followed by a projectile in known as its

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Range

Trajectory

Cycle

Height

A ball is thrown up with 20 ms-1 at an angle of 60 ^owith x-axis , the velocity of the ball at the top position is.

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0 ms-1

10 ms-1

20 ms-1

16 ms-1

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

Change of momentum is equal to

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Force

Tension

Impulse

Pressure

If velocity time graph is parallel to time axis, then acceleration of moving body will be.

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Maximum

Positive

Zero

Negative

For a rocket , the change in momentum per second of the ejecting gases is equal.

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Acceleration of the rocket

Momentum of rocket

Velocity of rocket

Thrust acting on rocket

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

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Physics Fsc Part 1 Chapter 3 Online Test MCQs With Answers

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