AIIMS2000Physics-Optics
AIIMS 2000 Physics Lens and Refraction Assertion Reason Question
Type: Assertion Reason-conceptual-Medium-Class 12
Assertion: If a convex lens is kept in water its convergent power decreases.
Reason: Focal length of convex lens in water increases.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
The refractive index difference between lens and water is less than that between lens and air, increasing focal length and decreasing power.
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