Home Physics Wave and Sound Mix An engine, approaching a tunnel at constant …
Physics Wave and Sound Mix MCQ (Single Correct)

An engine, approaching a tunnel at constant speed, whistles twice at an interval of 10 minutes. The driver hears the echo of the first, 20 seconds after its sounding; while he hears the echo of the second 16 seconds after its sounding. Find the distance of the engine from the tunnel when

A
the first whistle is sounded and
B
the second whistle is sounded.
C
Find also the speed of the train. (Take velocity of sound = 332 ms –1 )

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The correct answer is:
CHECK THE SOLUTION.

3331.1 m

2665.1 m

1.11 m/s

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