Question

The sky appears dark to passengers flying at very altitude mainly because
(A) scattering of light is not enough at such height
(B)there is no atmosphere at great heigh
(C)the size of molecules is smaller than the wavelength of visible light
(D)the light gets scattered towards the earth

Answer 1

Answer:

It is because scattering of light is not enough at such heights.

CLASS 10 NCERT PAGE 196 LINE 9

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Answer 2

(A) scattering of light is not enough at such heights

At higher altitudes, the density of air decreases. The atmospheric refraction is not prominent at such heights. Since, there is no refraction, scattering of light doesn't take place and the person flying at high altitude sees the colour of sky dark.