Light from a denser medium 1 passes to a rarer medium 2. When the angle of incidence is `theta` the partially reflected and refracted rays are mutually perpendicular. The critical angle will be
A
` sin^(-1) (cottheta)`
B
` sin ^(-1) (tan theta)`
C
` sin ^(-1) (cos theta)`
D
` sin ^(-1) (sec theta)`
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The correct Answer is:
B
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