MPSC PYQScienceSound Numericalenglish

Between two cliffs: 640 m from nearest; first echo 4 s, second 3 s later. Speed and cliff separation?

A.300 m/s, 1760 m
B.340 m/s, 1660 m
C.320 m/s, 1760 m
D.240 m/s, 1660 m

Correct answer: C

Source paper

Science: Sound (Numerical)

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