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Waves

Practice Questions:

Question 1: easy

Velocity of sound in medium is V. If the density of the medium is doubled, what will be the new velocity of sound ?

1. √2 V

2. V

3. 4V

4. V/√2

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Question 2: easy

Speed of sound waves in a fluid depends upon

1. Directly on density of the medium

2. Square of Bulk modulus of the medium

3. Directly on the square root of density

4. Directly on the square root of bulk modulus of the medium

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Speed of sound in a fluid is given by

\[ v = \sqrt{\frac{B}{\rho}} \]

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Question 3: easy

Two waves of intensity ratio 9 : 1 produce interference then

\[ \frac{I _{max}}{I _{min} } = \]

1. 2:1

2. 4:1

3. 9:1

4. 10:8

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Question 4: easy

In a stationary wave all the particles

1. On either side of a node vibrate in same phase

2. In the region between two nodes vibrate in same phase

3. In the region between two antinodes vibrate in same phase

4. Of the medium vibrate in same phase

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Question 5: easy

The particle displacement (in cm) in a stationary wave is given by y(x, t) = 2 sin (0.1 πx) cos (100 πt). The distance between a node and the next antinode is

1. 2.5 cm

2. 7.5 cm

3. 5 cm

4. 10 cm

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Question 6: easy

Instantaneous profile of a rope carrying a progressive wave moving from left to right is shown. Find the correct option

1. Both P and Q are moving upward

2. Both P and Q are moving downwards

3. P is moving upwards and Q is moving downwards

4. P is moving downwards and Q is moving upwards

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