A small bulb is placed at the bottom of a tank containing water to a depth of 
m. The refractive index of water is 
. The area of the surface of water through which light from the bulb can emerge out is 
. The value of x is_______.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(9)
C : Criticle angle
Area of surface = 
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