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If a stone dropped from the top of a tow...

If a stone dropped from the top of a tower travels half of the height of the tower during last second of its fall, the time of fall is (in seconds)

A

`3 + sqrt2`

B

`4 + sqrt2`

C

`2 -sqrt2`

D

`2+sqrt2`

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The correct Answer is:
D
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AAKASH SERIES-RIVISION EXERCISE-MOTION IN A STRAIGHT LINE (VERTICAL MOTION)
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  17. A particle is projected vertically upwards with a velocity of 20m/sec....

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