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CBSE Class 12-science Answered

SEMI VERTICAL ANGLE
Asked by | 04 Mar, 2008, 08:01: AM
Expert Answer

The maximum angle of incidence for which light is not internally reflected is

1/(4/3) = sin i/ sin 900

sin i = 3/4

From geometry you can see that this is equal to the semi vertical angle of the cone of light formed underwater.

Hence i = sin inverse 3/4.

Answered by | 19 May, 2008, 06:16: PM
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