STANDARDPhysics-Optics
STANDARD Physics Lenses MCQ Question
Type: MCQ-numerical-Medium-Class 12
A convex lens of focal length 0.2 m and made of glass (μ_glass = 1.5) is immersed in water (μ_water = 1.33). The change in the focal length of the lens is
A
5.8 m
B
0.58 cm
C
0.58 m
D
5.8 cm
Correct Answer
Option C
Detailed Explanation
The focal length changes due to the change in the refractive index of the surrounding medium. The new focal length is calculated to be 0.58 m. Hence, option (C) is correct.
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