RRB Group D 27-Sep-2018 Shift 1 Solved Paper

Question : 3 of 100

Marks: +1, -0

A person clapped his hands near a cliff and heard echo after 6 s. The distance of the cliff from the person is:

[

take

v=346 \ { ms}^{-1}]

$1038 \ { m}$
$1083 \ { m}$
$2076 \ { m}$
$2706 \ { m}$

Validate

Solution:

The sound traveled from the place the person stood, to the cliff and then rebounded back to the person, so the person heard the resound/echo.
So the sound traveled twice the distance between him/her and the cliff.
Distance between cliff and person

=346 \ { m} \/ {sec}×6

seconds

/ 2

=1038

meters

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