Q.

Is it true that when you and your friend are on the moon then you will be able to hear the sound produced by your friend?


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a

True

b

False 

answer is B.

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Detailed Solution

The above statement is false.
There is no material medium, such as air or an atmosphere, on the moon. A medium through which a sound wave can propagate is necessary for the wave to travel. Due to the lack of an atmosphere, there is no physical medium for sound to travel through on the moon.
The correct statement would be, that when you and your friend are on the moon then you will not be able to hear the sound produced by your friend.
 
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