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Two projectiles are projected simultaneo...

Two projectiles are projected simultaneously from the top and bottom of a vertical tower of height `h` at angles `45^(@)` and `60^(@)` above horizontal respectively.Body strike at the same point on ground at distance `20m` from the foot of the tower after same time.
The time of flight of projectles is

A

`(3)^(1/4)`

B

`2(3)^(1/4)`

C

`3(3)^(1/4)`

D

`4(3)^(1/4)`

Text Solution

Verified by Experts

The correct Answer is:
B
`R_(1)=(U cos theta)t=U/sqrt2sqrtsqrt3`
`U/sqrt(2)2sqrtsqrt3=20,U=(10sqrt2)/(root(4)(3)) U/V=1/sqrt2`
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