Question

Which among the following statements is true?

• A. Sound moves very slowly in the outer space.
• B. Intensity of sound gets reduced in the outer space.
• C. Shrillness of sound gets reduced in outer space.
• D. Sound cannot propagate in outer space.

Answer 1

The correct option is D Sound cannot propagate in outer space.

Sound needs a medium to travel, but outer space has no atmosphere. Therefore sound cannot travel in outer space. This is the reason why people cannot talk to each other in vacuum.