Question

Why stars seem higher than they actually are? (3 marks type question) ​

Answer 1

Stars are independent sources of light... They are situated very far away from Earth. Light from a star first enters in vacuum and then in the earth’s atmosphere. As the optical density of air increases towards the surface of earth, light from the star travels from rarer to denser layers, bending every time. On producing the final refracted ray backwards, it is seen that the apparent position of the star is higher...

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Answer 2

Stars are independent sources of light, situated very far away from earth. Light from a star first enters in vacuum and then in earth’s atmosphere. As optical density of air increases towards the surface of earth, light from the star travels from rarer to denser layers, bending every time towards normal. On producing the final refracted ray backwards, it is seen that the apparent position of the star is higher

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