NEET Physics Prism MCQ Question
A tank is filled with water to a height of 12.5 cm. If the apparent depth of a needle lying at the bottom of the tank is 9.4 cm, what is the refractive index of water?
33
25
50
78
Correct Answer
Detailed Explanation
The refractive index of water is calculated using the formula n = (real depth)/(apparent depth). Here, n = 12.5 cm / 9.4 cm = 1.33.
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