A transverse wave moves from a medium \(A\) to a medium \(B\). In medium \(A\), the velocity of the transverse wave is \(500~\text{ms}^{-1}\) and the wavelength is \(5~\text{m}\). The frequency and the wavelength of the wave in medium \(B\) when its velocity is \(600~\text{ms}^{-1}\), respectively are:

1. \(120~\text{Hz}\) and \(5~\text{m}\) 2. \(100~\text{Hz}\) and \(5~\text{m}\)
3. \(120~\text{Hz}\) and \(5~\text{m}\) 4. \(100~\text{Hz}\) and \(6~\text{m}\)
Subtopic:  Speed of Sound |
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The speed of sound in a medium is \(v\). If the density of the medium is doubled at constant pressure, what will be the new speed of sound?

1. \(\sqrt{2} v \) 2. \(v \)
3. \(\frac{v}{\sqrt{2}} \) 4. \(2v\)
Subtopic:  Speed of Sound |
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Sound waves travel at \(350\) m/s through warm air and at \(3500\) m/s through brass. The wavelength of a \(700\) Hz acoustic wave as it enters brass from warm air:
 

1. increase by a factor of \(20\) 
2. increase by a factor of \(10\)
3. decrease by a factor of \(20\)
4. decrease by a factor of \(10\) 
Subtopic:  Speed of Sound |
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Given below are two statements: 
Statement I: The speed of sound waves in a medium depends on the elastic modulus and the density of the medium.
Statement II: The speed of sound in a gas is independent of its temperature.
 
1. Statement I is incorrect and Statement II is correct.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct and Statement II is incorrect.
Subtopic:  Speed of Sound |
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A sound wave is passed through a chamber. If the r.m.s. speed of molecules in a gas is v1 and the speed of sound is v2 in the gas, then: 

1. v1 = v2 2. v1 > v2
3. v1 < v2 4. v1 ≤ v2
Subtopic:  Speed of Sound |
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If the absolute temperature increases by \(1\%\), the frequency of an organ pipe will:
1. increase by \(1\%\) 2. decrease by \(1\%\)
3. increase by \(0.5\%\) 4. decrease by \(0.5\%\)
Subtopic:  Speed of Sound |
 69%
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A person standing between two parallel hills fires a gun and hears the first echo after t1 sec and the second echo after t2 sec. The distance between the two hills is: [Given: Speed of sound = v]

1. vt1-t22
2. vt1t22t1+t2
3. vt1+t2
4. vt1+t22

Subtopic:  Speed of Sound |
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A bat emits an ultrasonic sound of frequency \(1000\) kHz in the air. If the sound meets a water surface, what is the wavelength of the reflected sound? (The speed of sound in air is \(340\) m/sec and in water is \(1486\) m/sec)
1. \(3.4 \times 10^{-4}~\text{m}\)
2. \(1 . 49 \times 10^{- 3}  ~ \text{m}\)
3. \(2 . 34 \times 10^{- 2}   ~\text{m}\)
4. \(1 . 73 \times10^{- 3}   ~\text{m}\)

Subtopic:  Speed of Sound |
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The speed of sound at a constant temperature depends on:

1. Pressure 2. Density of gas
3. Above both 4. None of the above
Subtopic:  Speed of Sound |
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The velocity of sound in air is:

1. faster in dry air than in moist air.
2. directly proportional to the pressure.
3. directly proportional to temperature.
4. independent of the pressure of air.

Subtopic:  Speed of Sound |
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