Q. Stars twinkle but planet do not twinkle because

A
they emit light of constant intensity
B
their distance from the earth does not change with time
C
they are very far away from the earth resulting in decrease in intensity of light
D
they are nearer to the earth and hence we receive a greater amount of light and therefore minor variations in intensity are not noticeable
Solution:

Stars twinkle because they appear as small dot as seen from Earth. Planets don’t twinkle because they are closer, and thus appear larger in our sky and thus the variations in intensity goes unnoticed.

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