A point source of light is placed at a distance h below the surface of – McqOptions

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1.	A point source of light is placed at a distance h below the surface of a large deep lake. What is the percentage of light energy that escapes directly from the water surface if \[\mu \] of water \[=\frac{4}{3}\]?
A.	0.5
B.	0.25
C.	0.2
D.	0.17
Answer» E.

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