Assertion :The focal length of a lens does not depend on the medium in which it is submerged. Reason: 1f=μ2−μ1μ1(1R1−1R2)
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution
The correct option is D Assertion is incorrect but Reason is correct The focal length of a lens depends on the refractive index of the medium, hence assertion is wrong. the reason is correct statement because it shows us the relationship of focal length with refractive index of medium. so correct answer is D.