A monochromatic light wave is incident normally on a glass slab of thickness d, as shown in the figure. The refractive index of the slab increases linearly from $$n_1$$ to $$n_2$$ over the height h. Which of the following statement(s) is (are) true about the light wave emerging out of the slab?

A

It will deflect up by an angle $$\tan^{-1}\left[\frac{(n_2^2 - n_1^2)d}{2h}\right]$$

B

It will deflect up by an angle $$\tan^{-1}\left[\frac{(n_2 - n_1)d}{h}\right]$$

C

It will not deflect.

D

The deflection angle depends only on $$(n_2 - n_1)$$ and not on the individual values of $$n_1$$ and $$n_2$$.