When a pin is moved along the principal axis of a small concave mirror, the image position coincides with the object at a point 0.5 m from the mirror, refer figure. If the mirror is placed at a depth of 0.2 m in a transparent liquid, the same phenomenon occurs when the pin is placed 0.4 m from the mirror. The refractive index of the liquid is -
Text Solution
Verified by ExpertsThe correct answer is:
D
R = 50 cm
d app. = 30 = μ 20
⇒ μ = 3/2
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