The speed of light in media M1 and M2 is 1.5x108m/s and 2x 108m/s respectively. A ray of light enters from medium M1 to M2 at an incidence angle i. If the ray suffers total internal reflection, the value of i is :
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a
equal to or less than Sin-1 35
b
equal to or greater thanSin-134
c
less than Sin-123
d
equal to Sin-123
answer is B.
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Detailed Solution
Sin C =μrarerμdenser= VdenserVrarer as V∞1μ Sin C= 1.52=34 i≥C