Two strings \(A\) and \(B,\) made of same material, are stretched by same tension. The radius of string \(A\) is double of the radius of \(B.\) A transverse wave travels on \(A\) with speed \(v_A\) and on \(B\) with speed \(v_B.\) The ratio \(\frac{v_A}{v_B}=\) ?

1. \(\frac{1}{2}\) 2. \(2\)
3. \(\frac{1}{4}\) 4. \(4\)
Subtopic:  Speed of Sound |
 64%
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Both the strings, shown in the figure, are made of the same material and have the same cross-section. The pulleys are light. The wave speed of a transverse wave in the string \(AB\) is \(v_1\) and in \(CD\) it is \(v_2\). Then \(\dfrac{v_1}{v_2}\) is:

                              

1. \(1\)
2. \(2\)
3. \(\sqrt2\)
4. \(\dfrac{1}{\sqrt{2}}\)

Subtopic:  Speed of Sound |
 63%
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A wave pulse, travelling on a two-piece string, gets partially reflected and partially transmitted at the junction. The reflected wave is inverted in shape as compared to the incident one. If the incident wave has wavelength \(\lambda\) and the transmitted wave\(\lambda\)',

1. \(\lambda\)' > \(\lambda\)

2. \(\lambda\)' = \(\lambda\)

3. \(\lambda\)' < \(\lambda\)

4. nothing can be said about the relation of \(\lambda\) and \(\lambda\)'

Subtopic:  Speed of Sound |
 51%
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The bulk modulus and the density of water are greater than those of air. With this much of information, we can say that velocity of sound in air

1. is larger than its value in water

2. is smaller than its value in water

3. is equal to its value in water

4. cannot be compared with its value in water

Subtopic:  Speed of Sound |
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A tuning fork sends sound waves in the air. If the temperature of the air increases, which of the following parameters will change?

1. Displacement amplitude

2. Frequency

3. Wavelength

4. Time period

Subtopic:  Speed of Sound |
 61%
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The speed of sound in a medium depends on:

1. the elastic property but not on the inertia property
2. the inertia property but not on the elastic property
3. the elastic property as well as the inertia property
4. neither the elastic property nor the inertia property
Subtopic:  Speed of Sound |
 73%
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When you speak to your friend, which of the following parameters have a unique value in the sound produced?

1. Frequency

2. Wavelength

3. Amplitude

4. Wave velocity

Subtopic:  Speed of Sound |
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An electrically maintained tuning fork vibrates with constant frequency and constant amplitude. If the temperature of the surrounding air increases but pressure remains constant, the sound produced will have

(a) larger wavelength
(b) larger frequency
(c) larger velocity
(d) larger time period


Choose the correct option:
1. (a) and (b)
2. (a) and (c)
3. (a), (b) and (c)
4. (b) and (d)

Subtopic:  Speed of Sound |
 68%
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