Arjun and Khushi are two astronauts moving close to each other in outer space, Arjun suddenly feels his oxygen supply is running out and shouts out to Khushi, but Khushi cannot hear him. What is the most probable reason for this?

Sound cannot propagate in vacuum

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Sound moves very slowly in the outer space

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Intensity of sound gets reduced in the outer space

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None of these

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Solution

The correct option is A
Sound cannot propagate in vacuum

The most probable reason why Khushi can not hear Arjun's sound because sound needs a medium to travel as vibrations can not propagate without a medium.

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