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CBSE Class 10 Answered

A ray of light is travelling from air to water.What is the angle of incidence in air
Asked by | 03 May, 2008, 05:49: PM
answered-by-expert Expert Answer

From the log table find the value of sin 410 which will be the value ofsin r in the formula

put this value  and the value of refractive index 'n' in the formula

n = sin i/sinr

Now  the value of sin i after converting in degres with the help of log table will give you the desired angle of incidence.

regards

toppers expert.

Answered by | 24 May, 2008, 12:57: AM
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