Question

10.
isht the refractive index of air is smallest near the ground and increase with height from the
On a hot summer night, the refractive index of airi
ground. When a light beam is directed horizo
light beam is directed horizontally, the Huygen's principle leads us to conclude that as it travels,
the light beam:
(JEE(Main) 2015]
(A)becomes narrower
(B) goes horizontally without any deflection
(C) bends downwards
(D) bends upwards​

Answer 1

Answer:

A. option is right ..........

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