AIIMS AIIMS Solved Paper-2005

  • question_answer

    Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as

    Assertion: Diamond glitters brilliantly. Reason: Diamond does not absorb sunlight.

    A) If both assertion and reason are true and reason is the correct explanation of assertion.

    B) If both assertion and reason are true but reason is not the correct explanation of assertion.

    C) If assertion is true but reason is false.

    D) If both assertion and reason are false.

    Correct Answer: B

    Solution :

                    The faces of diamond are so cut that the light ray entered inside diamond fall on the diamond air interface at an angle greater than critical angle and so suffer repeated total internal reflections and comes out of its faces only in some specific directions, because of which it shines. All the light-entering m it comes- out of diamond after number of reflections and no light is absorbed by it.


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