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Standard VIII
Physics
Introduction to Light
A stone is dr...
Question
A stone is dropped into a well, the sound of the splash is heard after 2.5 seconds. Find the depth of the well if the velocity of sound is 330m/s.
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Solution
d
i
s
tan
c
e
t
r
a
v
e
l
l
e
=
2
×
d
e
p
t
h
t
i
m
e
=
2
.
5
s
s
p
e
e
d
=
330
m
/
s
s
p
e
e
d
=
d
i
s
tan
c
e
t
i
m
e
=
2
×
d
e
p
t
h
2
.
5
=
330
d
e
p
t
h
=
371
.
5
m
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