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One person(A) is in a room such that the door is open and another person(B) is outside the room both the persons are hiding behind the wall so no one can see each other one person(A) speaks and the other person(B) can hear him so question is both light and sound are waves but why cant the other person(B) see him if he can hear him(A)

One person(A) is in a room such that the door is open and another person(B) is outside the room both the persons are hiding behind the wall so no one can see each other one person(A) speaks and the other person(B) can hear him so question is both light and sound are waves but why cant the other person(B) see him if he can hear him(A)

Grade:11

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