A 60° prism of refractive index 1.60 is immersed in a liquid of index 1.20. The critical angle at the prism-liquid interface is closest to:

Physics · Geometrical optics · prism and thin prism

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A 60° prism of refractive index 1.60 is immersed in a liquid of index 1.20. The critical angle at the prism-liquid interface is closest to:

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