Question # 1

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

When the amplitude of a wave is increase to doubled is energy.

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Remain the same

Increases 4 times

Increases by two times

Decreases by half

The dimensional unit of impulse is.

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[MLT]

[MLT-1]

[ML-1T-1]

[M-1L-1T-1]

When newton ring are seen through the transmitted light, then central spot is.

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Dark

Blue

Bright

Red

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

Two waves of same frequency and moving in the same direction produces.

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Interference

Diffraction

Beats

Stationary waves

A swing is good example of

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Resonance

Vibration

Time period

Oscillation

At which of the following temperature a body has maximum internal energy.

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-273 ^oC

0 K

273 K

-273 K

The efficiency of heat engine whose sink is at 17 ^oC and source at 200 ^oC is.

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38%

63%

80%

90%

the velocity of sound is maximum at 20 ^oC in

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Lead

Copper

Glass

Iron

A force of 20 N acts along x axis, tis component is.

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0 N

10 N

20 N

30 N

In vibrating string, the points where the amplitude is maximum are called.

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Nodes

Antinodes

Troughs

Crests

A typical diffraction grating has certain number of lines per centimeter whose range is.

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40 to 50

400 to 5000

400 to 500

4000 to 5000

The state of human blood flow can be found by using.

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Newton's formula of speed of sound

Interference of sound

Phenomena of beats

Doppler's effect of sound

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

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

The SI unit of power is

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Joule

Newton

Watt

Kilowatt

The shape of trajectory of short range projectile is

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Straight line

Circle

Elliptical

Parabolic

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Physics Fsc Part 1 Online Test MCQs With Answers

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