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Q. |
A long Rail (approximately 700 meters) made up of steel is struck to produce a sound. The person standing on the other end of the rail would hear in which among the following pattern? |
A. | He listens the sound waves once propagated via steel |
B. | He listens the sound waves once propagated via air |
C. | He listens the sound waves twice, first propagated via steel and second propagated via air |
D. | He listens the sound waves twice, first propagated via air and second propagated via steel |
Answer» C. He listens the sound waves twice, first propagated via steel and second propagated via air |
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