← Back to Waves

Sound Wave and its Characteristics

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

View Answer

💬 Discuss this Question

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

View Answer

Speed of sound in a fluid is given by

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

💬 Discuss this Question

Question 3: easy

Given below are two statements:

Assertion (A): Sound would travel faster on a hot summer day than on a cold winter day.

Reason (R): Velocity of sound is directly proportional to the square root of its absolute temperature.

1. Both (A) and (R) are true and (R) is the correct explanation of (A).

2. Both (A) and (R) are true but (R) is not the correct explanation of (A).

3. (A) is true but (R) is false.

4. (A) is false but (R) is true.

View Answer

The speed of sound in a gas is \(v = \sqrt{\frac{\gamma RT}{M}}\), meaning \(v \propto \sqrt{T}\). Since temperature is higher on a hot summer day than a cold winter day, sound travels faster in summer. Both statements are true and Reason is the correct explanation.

💬 Discuss this Question