A light ray enters from medium A to medium B as shown in the figure. (a) Which one of the two media is…
A light ray enters from medium A to medium B as shown in the figure.
(a) Which one of the two media is denser w.r.t. other medium ? Justify your answer. [1]
(b) If the speed of light in medium A is va and in medium B is vb, what is the refractive index of B with respect to A. [1]
Solution
(a) Medium B
In medium B ray of light bends towards normal / ∠ r < ∠ i
(b) Refractive index of Medium 'B' with respect of Medium 'A' is
n(BA) = va / vb
