Questions
A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is and the fish is 12 cm below the surface, the radius of this circle in cm is
detailed solution
Correct option is D
sinc=1μ=rr2+h2 r=3h7=3×127=367Talk to our academic expert!
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A point source of light is placed 4 m below the surface of water of refractive index . The minimum diameter of a disc which should be placed over the source on the surface of water to cut–off all light coming out of water is
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