Question

a pebble is dropped into a well of depth h. The splash is heard after time t if c be the velocity of the sound ,then
a) t=gh²/cv²
b) t=c+v/g
c) t=c-v/g
d) t=whole root 2h/g + h/c
JEE material -2018(Physics)​

Answer 1

Explanation:

d) h/c + $\sqrt{2h \div g}$

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Answer 2

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