Is it true that the twinkling of stars and mirages are examples of atmospheric refraction?

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True

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answer is A.

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Detailed Solution

The above statement is true.
The twinkling of stars and mirages both happen due to atmospheric refraction. Twinkling happens due to the passing of light through the atmospheric layers of different densities. As we know, the speed of light is different in different mediums. Mirage is the delusional appearance of distant objects due to the refraction of light while passing through the atmospheric layers of different densities. This is because the refractive index of the layers of the atmosphere increases on going up.

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