light travels with vilocities 2×10^8 m/s and 2.5 ×10^8 m/s through 2 different media. the critical angle of the two media is?
a)sin^-1(5/3)
b)sin^-1(5/4)
c)sin^-1(16/15)
d)sin^-1(3/2)
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Answer:
b
Explanation:
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