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The width of a plane incident wavefront is found to be doubled in a denser medium. If it makes an angle of 70° with surface,

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The width of a plane incident wavefront is found to be doubled in a denser medium. If it makes an angle of 70° with surface, calculate the refractive index for the denser medium.

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Given: i = 70°, CD = 2AB

To find: Refractive index (μ)

\(\therefore\) μ = 1.288

The refractive index for the denser medium is 1.288.

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