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प्रश्न
Is the formula "Real depth/Apparent depth = μ" valid if viewed from a position quite away from the normal?
उत्तर
No, because this formula is only valid when the angles of incidence and refraction are small. When the angles of incidence and refraction are large, we cannot use relations sini = tani and sinr = tanr to derive the formula for the apparent depth.
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