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48. The speed of light in a medium of (absolute)refractive index of 2 is(a) 6 x 108 ms-1 (b) 3 × 108 ms-1(c) 2 × 108 ms-I . (d) 1.5 × 10"ms-1

Answer»

n=c/vv=c/nv=3×10^8/2v=1.5×10^8m/sYour answer is (d).



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