alleryA person claps near a cliff and hears the echo after 6 s. If the speed of sound is 346 m/s, how far is the cliff from the person?
A1083 m
B2076 m
C1038 m
D2706 m
Answer & Solution
Correct answer: C. 1038 m
1. Sound travels to the cliff and back, so total distance = v × t = 346 × 6 = 2076 m.
2. This is twice the cliff distance.
3. Cliff distance = 2076 / 2 = 1038 m.
_Source: RRB Group D CEN-02/2018 PYQ, Q.3._
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