A beam of light propagating in medium A with index of refraction `n(A)` passes across an interface into medium B with index of refraction `n(B)`. If `v(A)` and `v(B)` are the speeds of light in A and B respectively. Then which of the following is true?A. (a) `v(A)gtv(B)` and `n(A)gtn(B)`B. (b) `v(A)gtv(B)` and `n(A)ltn(B)`C. (c) `v(A) lt v(B)` and `n(A)gtn(B)`D. (d) `v(A) lt v(B)` and `n(A) lt n(B)`

A beam of light propagating in medium A with index of refraction `n(A)

1.	A beam of light propagating in medium A with index of refraction `n(A)` passes across an interface into medium B with index of refraction `n(B)`. If `v(A)` and `v(B)` are the speeds of light in A and B respectively. Then which of the following is true?A. (a) `v(A)gtv(B)` and `n(A)gtn(B)`B. (b) `v(A)gtv(B)` and `n(A)ltn(B)`C. (c) `v(A) lt v(B)` and `n(A)gtn(B)`D. (d) `v(A) lt v(B)` and `n(A) lt n(B)`
Answer» Correct Answer - B Light travels faster in rarer medium. This alone decides is favour of option (b).

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