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Question
The optical phenomenon of twinkling of stars is due to atmospheric ________.
The optical phenomenon of twinkling of stars is due to atmospheric ________.
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Solution
The correct option is D refraction
When light rays from a distant star pass through the earth's atmosphere, they change their direction continuously due to the varying optical density of the atmosphere. Also the changing physical conditions of the atmosphere affect the amount (brightness) of starlight entering our eyes. Thus, stars appear to twinkle in the night sky.
When light rays from a distant star pass through the earth's atmosphere, they change their direction continuously due to the varying optical density of the atmosphere. Also the changing physical conditions of the atmosphere affect the amount (brightness) of starlight entering our eyes. Thus, stars appear to twinkle in the night sky.
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