Question

Which of the following statements are correct regarding scattering of light?I. Scattering is responsible for the bluish appearance of the sky.II. Clouds having droplets of water scatter all wavelengths almost equally and so generally white.III. Advanced sunrise and delayed sunset.. *

a) only (i) is correct

b) only (i) and (ii) are correct

c) only (iii) is correct

d) All (i), (ii) and (iii) are correct

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Answer 1

Explanation:

only III

because it happens in our life

we can see sun 2 min. before sunrise

and also see sun 2 min. after sunset

Answer 2

Answer: Option d) all of these correct

Explanation:

Scattering is responsible for the bluish appearance of the sky because  the scattering caused  tiny air molecules  increases as the wavelength of light decreases . We know that the violet and blue light have the shortest wavelengths and red light has the longest. Hence blue light is scattered more than red light and the sky appears blue during the day

Clouds having droplets of water scatter all wavelengths almost equally and so generally white because  sunlight is scattered by much larger water droplets and scatter all colors almost equally meaning that the sunlight continues to remain white and so making the clouds appear white against the background of the blue sky.

Advanced sunrise and delayed sunset are events caused due to atmospheric refraction as The sun is rising above the horizon during sunrise and The rays from the sun refract as they move from denser  air to lighter air. The human eye can see the sun rays as a straight line which appears as the sun has risen. In case of delayed sunset  the sun after sunset, is setting below the horizon. N In this time the sun's apparent position is visible to us, not the actual position.

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