Question # 1

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

Diffraction is a special type of

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Reflection

Polarization

Interference

Refraction

10 waves pass through a point in 2 seconds with speed 10 ms-1 the frequency of wave will be

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1 Hz

2 Hz

5 Hz

10 Hz

In which medium the speed of sound is greater.

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Oxygen

Air

Water

copper

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

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

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

Radar system is an application of.

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Chemical effect

Electric effect

Magnetic effect

Doppler's effect

The distance between the consecutive nodes is

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A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

An oscillating mass-spring system produces

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Sound waves

Electromagnetic waves

Light waves

Periodic waves

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

the velocity of sound at 0 ^oC is 332 ms-1, the velocity of sound at 10 ^oC will be

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337.1 ms-1

338.1 ,ms-1

342.1 ms-1

328.1 ms-1

The apparent change in the pitch of sound due to relative motion is called.

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Carnot theorem

Interference

Doppler effect

Beats

Velocity of sound is independent of

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Temperature

Density

Pressure

Medium

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is.

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4 l

2l

l

1/4 l

The distance between two consecutive crests of troughs is called

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Time period

Wave length

Frequency

Displacement

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Physics Fsc Part 1 Chapter 8 Online Test MCQs With Answers

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