AIIMS2005Physics-Optics
AIIMS 2005 Physics Refraction MCQ Question
Type: MCQ-numerical-Hard-Class 12
The apparent depth of water in cylindrical water tank of diameter 2R cm is reducing at the rate of x cm/minute when water is being drained out at a constant rate. The amount of water drained in c.c. per minute is (n₁ = refractive index of air, n₂ = refractive index of water).
A
xπR²n₁/n₂
B
xπR²n₂/n₁
C
2πRn₁/n₂
D
πR²x
Correct Answer
Option B
Detailed Explanation
Change in real depth = n2/n1 x change in apparent depth
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