Question # 1

The error in speed of sound calculated by Newton at STP is about.

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0 %

14 %

15 %

16 %

Speed of sound in aluminum at 20 ^oC is.

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3600 m/s

5100 m/s

5130 m/s

3500 m/s

When the amplitude of a wave become double, its energy becomes

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One half

Two times

Three times

Four times

In stationary waves, the particle velocity at nodes is

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Minimum

Maximum

Zero

Constant

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 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 portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

The periodic variations of sound between maximum and minimum loudness are called.

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Doppler's effect

reflection

Laplace correction

Beats

An oscillating mass-spring system produces

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Sound waves

Electromagnetic waves

Light waves

Periodic waves

Diffraction is a special type of

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Reflection

Polarization

Interference

Refraction

Frequency range of hearing of cats is.

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20-20000 Hz

10- 10000 Hz

60-20000 Hz

60-70000 Hz

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