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A stone is dropeed from a height of10 cm...

A stone is dropeed from a height of10 cm above the top of a window 80 cm high. The time taken by the stone to cross the window is `(g = 9.8 ms^(-2))`

A

`1/7 s `

B

`3/7 s `

C

`2/7 s `

D

`4/7 s `

Text Solution

Verified by Experts

The correct Answer is:
C
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