NEET Physics Refraction Assertion Reason Question
Assertion (A): A lens with the same refractive index as the surrounding medium will act like a plane sheet of glass.
Reason (R): The lens disappears in the medium when its refractive index equals that of the medium, resulting in an infinite focal length.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
When the refractive index of a lens matches that of the surrounding medium, the lens becomes optically invisible, acting like a plane sheet of glass as the focal length becomes infinite.
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