Question

The speed of sound does not depend on
A. Density
B. Pressure
C. Temperature
D. Humidity

Answer 1

Hint: The factors affecting the speed of sound can give us the solution to this problem.

Complete step by step solution:
The factors which affect the speed of sound are:-

Density: The speed of sound is inversely proportional to the square root of density of the gas.

Temperature: The speed of sound is directly proportional to the square root of absolute temperature.

Humidity: The speed of sound increases with the increase of humidity.

We can see that in the above stated factors pressure is missing, so pressure is the factor which does not affect the sound. In other words, speed of sound is independent of pressure . Therefore, the answer is option B i.e., pressure.

Additional information: Sound waves are longitudinal waves ( which travel in the form of compression and rarefactions).

Note: Sound waves require medium for its propagation . In other words, sound waves cannot travel without any medium.