Question

An astronaut cannot hear his companion at the surface of the moon because

• A. produced frequencies are above the audio frequencies
• B. there is no medium for sound propagation
• C. temperature is too low during the night and too high during the day
• D. there are too many craters on the surface of the moon

Answer 1

The correct option is B there is no medium for sound propagation

There is lack of atmosphere on the moon and sound waves are mechanical waves, they need medium to travel. So option "B" is correct.