Question # 1

The profile of periodic waves generated by a source executing S.H.M is represented by a.

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Circle

Sine curve

Tangent curve

Cosine curve

Velocity of sound is independent of

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Temperature

Density

Pressure

Medium

On loading the prong of a tuning fork with wax, the frequency of sound.

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Increases

Decreases

Remains same

First increases then decrease

the example of mechanical waves is

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Water waves

Infrared waves

Radio waves

Ultraviolet waves

The distance between two consecutive trough is called.

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Displacement

Amplitude

Wave length

Wave front

The distance between two consecutive crests of troughs is called

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Time period

Wave length

Frequency

Displacement

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Stars moving away from Earth show a

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Green shift

Blue shift

Red shift

Yellow shift

Star moving towards the earth show

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Red shift

Blue shift

Green shift

Yellow shift

The waves used in radar speed trap are

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Longitudinal

Sound wave

Micro waves

Matter waves

Diffraction is a special type of

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Reflection

Polarization

Interference

Refraction

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 speed of sound in ari at 0 ^oC is 332 ms-1, Then the speed at 40 ^oC will be

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372 ms-1

356 ms-1

346 ms-1

332 ms-1

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

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

An oscillating mass-spring system produces

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Sound waves

Electromagnetic waves

Light waves

Periodic waves

The speed of sound in air would become double than ots speed at 10^oC at a temperature of.

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313 ^oC

586 ^oC

859^oC

899 ^oC

The distance covered by wave in 1 sec is

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wavelength

Wave number

Wave speed

Frequency

In transverse waves the particles of medium vibrate

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Along the direction of wave

Opposite to direction of wave

Perpendicular to direction of wave

Slowly

If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is.

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1m

2 m

3 m

4 m

Crests and trough are formed in.

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Longitudinal waves

transverse waves

Stationary waves

Compression waves

The speed of sound increases with the increase of in

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Pressure

Volume

Temperature

Density

When sound waves enter in different medium, the quantity that remains unchanged is.

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Intensity

Speed

Frequency

Wave length

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Physics Fsc Part 1 Chapter 8 Online Test MCQs With Answers

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