Question

Which of the following statements is incorrect?

• A. Sound transfer momentum
• B. Sound travels in form of wave
• C. Sound is a form of energy
• D. Sound travels faster in vacuum than in air

Answer 1

The correct option is D Sound travels faster in vacuum than in air

Sound being a longitudinal wave carries energy and transfers momentum.
Sound cannot travel through vacuum as it is a mechanical wave and requires a medium to propagate. Therefore, there will be no sound propagation in vacuum thus no speed of sound. Air acts as a medium of sound propagation and thus sound have some speed in air.