Assertion :A bright metal ball is first blackened with soot in a candle flame and then immersed in water, it will again appear bright. Reason: At water-air surface total internal reflection can take plane.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
As the bright metal ball is made black with soot, air enters in between space of the soot and the metal ball.

When the angle of incidence exceeds the critical angle then total internal reflection takes place and the ball with a soot coating appears bright.
In addition to this due to the refraction of light the ball to be raised high in its position.

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