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Q.

Is it true that the position of a star as seen by us is the true position?


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a

True

b

False  

answer is B.

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Detailed Solution

The above statement is False.
The apparent position of a star is constantly shifting in the blink of an eye. The star's twinkling is caused by the atmosphere's refraction of the star's light. Before reaching the earth, the starlight that enters its atmosphere travels through a medium with a gradually rising refractive index. Refraction of the light occurs continuously. As a result, The star appears to be a little away from its actual position.[31][32]
The correct statement would be, the star appears slightly different from its actual position.
 
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