atmospheric refraction and scaterring of ligh

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Question 6
Twinkling of stars is due to atmospheric

(a) dispersion of light by water droplets
(b) refraction of light by different layers of varying refractive indices
(c) scattering of light by dust particles
(d) internal reflection of light by clouds

Q. Match the following :

LIST I	LIST II
A) Rainbow	1) Scattering of light
B) Twinkling of stars	2) Dispersion of light
C) Blue colour of sky	3) Fluctuation of the refraction index in atmosphere layers
D) Advancement of sunrise and delay of sunset	4) Refraction of light

Q. When sunlight is scattered by atmospheric atoms and molecules the amount of scattering of light of wavelength 880nm is A. Then, the amount of scattering of light of wavelength 330 nm is approximately

Q. The atmospheric particles are more effective in the scattering of light of shorter wavelengths. Which of the following colour do you think will scatter least in the atmosphere?

Q. Question 5
Which of the following phenomena of light are involved in the formation of a rainbow?

(a) Reflection, refraction and dispersion
(b) Refraction, dispersion and total internal reflection
(c) Refraction, dispersion and internal reflection
(d) Dispersion, scattering and total internal reflection

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