what is the answer????????
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nirman95:
sin(c) = 1/u => sin(45°) = 1/u => u = √2. Now, velocity of light in that medium will be : v = (3 × 10⁸)/√2 = 2.08 × 10⁸ m/s.
or else , it will be (3/√2) × 10⁸ m/s
OPTION C )
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the answer is 1.5multiply 10^8m/s
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