Q.

The twinkling effect of star light is due to:

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a

Total internal infection

b

High dense matter of star

c

Constant burning of hydrogen in the star

d

Fluctuating apparent position of a star being slightly different from the actual position of a star

answer is D.

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Detailed Solution

The twinkling effect of start light is due to atmospheric refraction i.e., fluctuating apparent position of star being slightly different from the actual position of star.  

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