Question
Physics Question on Wave optics
On a hot summer night, the refractive index of air is smallest near the ground and increases with height from the ground. When a light beam is directed horizontally, the Huygens principle leads us to conclude that as it travels, the light beam
A
becomes narrower
B
goes horizontally without any deflection
C
bends upwards
D
bends downwards
Answer
bends upwards
Explanation
Solution
Bends upwards
