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Indian Navy SSR (Sailor) Ray Optics — practice questions

2 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.

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A light ray travels from glass ($\mu = 1.5$) to air. The critical angle for total internal reflection at the gRefractive index of water with respect to air is 4/3. The critical angle for a water–air interface is approxim