9.5
A small bulb is placed at the bottom of a tank containing water to a
depth of 80cm. What is the area of the surface of water through
which light from the bulb can emerge out? Refractive index of water
is 1.33. (Consider the bulb to be a point source.)
A prism is made of glass of unknown refractive index A parallel
9.6
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Answer:
Area of the surface =25,450.2m2
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