Question

Science fiction films often show battles between spaceships. Four friends
were arguing on what would someone in space hear if an enemy spaceship
exploded?
Rekha said, ' they would hear a big explosion.'
Renu said,' they will not hear anything as there is no medium for sound to
travel, but they can see the explosion.'
Ramesh said, yes, they will not hear anything and they will not be able to
see the explosion.
Raghav said, the explosion produces the sound of frequency above 20,000 Hz
hence we cannot hear it.'
Who is correct? Why?

Answer 1

Answer:

Raghav is correct

Explanation:

as human beings cannot hear the sound frequency above 20,000 Hz these frequencies are hence called ultrasonic sound which human beings cannot hear!