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Twinkling of Stars

Is the positi...

Question

Question 21
Is the position of a star as seen by us its true position? Justify your answer.

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Solution

No, light from stars undergoes atmospheric refraction and get deviated from actual path. Moreover the atmosphere is a medium of gradually changing refractive index. So, the position of the star seen by us is not its true position but its apparent position after refraction.

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Twinkling of Stars

Standard X Physics

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