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A student sees the top edge and the bott...

A student sees the top edge and the bottom center C of a pool simultaneously from an angle θ above the horizontal as shown in the figure. The refraction index of water which fills up to the top edge of the pool is 4/3. If h/x = 7/4 then `cos theta` is

A

`(2)/(7)`

B

`(8)/(3sqrt(45))`

C

`(8)/(3sqrt(53))`

D

`(8)/(21)`

Text Solution

Verified by Experts

The correct Answer is:
C
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