Question

4) Name the following :-

a) A phenomenon of light which generally occurs in desert due to

atmospheric refraction​

Answer 1

Explanation:

Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of height. This refraction is due to the velocity of light through air, decreasing with increased density.

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Answer 2

4.a)The phenomenon of light is called mirage

Explanation:

#Mirage is an optical illusion caused due to total internal reflection of light. The light gets refracted when it passes from cold to hot air and so light bends. The refracted light reaches to a point where the light tends to form an angle of 90 degree. Mirage is a phenomenon which can be seen when the surface air gets heated up and it becomes lighter.

#It usually occurs in deserts. It occurs in hot atmospheric conditions.