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Physics CBSE Live product
Class 9
Sound
Sound and waves
6.
Numerical based on speed
Question:
3
m.
A boy beating a drum infront of mountain hears the echo after
20
\(s\).
What is the
distance
of boy from the mountain, if velocity of sound in air is
330
\(m/s\)
?
The
distance
between boy and mountain is
\(m\).
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