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Subjects
Science CBSE
Class 9
Sound
Production, propagation and types of sound
1.
Numerical based on velocity
Exercise condition:
3
m.
1
. A boy beating a drum infront of mountain hears the echo after
4
\(s\). What is the
displacement
of boy from the mountain, if velocity of sound in air is
334
\(m/s\) ?
Answer
:
The distance between boy and mountain is
\(m\).
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