Question

Speed of sound does not depend on
A. Temperature
B. Pressure
C. Medium
D. None of the above

Answer 1

Hint:We know that the distance travelled by any sound per unit time is known as the speed of sound. It depends on the characteristics of the medium through which the propagation takes place. Thus, for solving this question, we need to know the factors which affect the speed of sound.

Complete answer:
We will first discuss the factors affecting speed of sound.The first factor is density of the medium. We know that a medium is required for sound waves to travel. Here, one of the factors on which the speed of sound depends is the density of the medium. When the medium has more density, the molecules in the medium are closely packed which means that the sound travels faster. Thus, we can say that the speed of sound increases as the density of the medium increases. As we know that different mediums have different densities, option C cannot be our answer.

The second factor is temperature. The speed of sound is directly proportional to the temperature of the medium. Thus, as the temperature increases, the speed of sound also increases. Therefore, option A cannot be our answer. Thus, these two are the main factors affecting speed of sound and pressure is the factor on which the speed of sound does not depend.

Hence, option B is the right answer.

Note:We have seen that the speed of sound is defined as the distance covered by the sound wave that propagates per unit time through an elastic medium. The speed of the sound depends on the elasticity and density of the medium. If the speed of the sound is greater than the elasticity is more and density is less.