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Question
A ray of light is incident on a glass surface at an angle of 50° with the corresponding angle of refraction 30°. Find the value of the R.I. of glass.
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Solution
R.I. = `sin"i"/sin"r"`
aμg = `sin"i"/sin"r"=(sin50°)/(sin30°)` ..........(∠i = 50° and ∠r = 30°)
= `0.7660/0.5000`
aμg = 0.1532.
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