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प्रश्न
A coin placed at a depth of 16 cm in a water tub, appears at a depth of 12 cm. What is the refractive index of water?
संख्यात्मक
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उत्तर
\[ \text{Refractive index of water} = \frac{\text{Real depth}}{\text{Apparent depth}} \]
\[ = \frac{16 \ \text{cm}}{12 \ \text{cm}} \]
\[ = \frac{4}{3} \]
≈ 1.33
Therefore, the refractive index of water is 1.33.
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