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Ray Optics and Optical Instruments: NEET 2026

Easy· Refraction through a Prism (Derivation of Refractive Index of Material of Prism)· +4 / −1
A ray of monochromatic light is passing through an equilateral prism (ABCABC) as shown in the figure. The refracted ray (QRQR) is parallel to its base (BCBC) and the angle of incidence (ii) is 50∘50^\circ. Then the angle of deviation (δ\delta) is: The ray PQPQ enters face ABAB, travels along QRQR parallel to the base BCBC, and leaves face ACAC along RSRS. The prism angle is 60∘60^\circ. Question diagram
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