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Question
Assertion: The degree of convergence or divergence of light rays is a measure of the power of the lens.
Reason: Power of a lens is the reciprocal of focal length of the lens.
Options
If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.
If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.
If Assertion is true, but the Reason is false.
If Assertion is false, but the Reason is true.
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Solution
If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.
Explanation:
Power measures the degree of convergence or divergence produced by a lens, and mathematically it is the reciprocal of focal length in metres. Both statements are true, but reciprocal definition describes the formula rather than conceptually explaining the degree of bending.
