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KEAM 2011 Physics and Chemistry Paper

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Question : 16

Total: 120

A glass prism of refractive index 1.5 is immersed in water (µ=

). Refer figure

A light beam incident normally on the face AB is totally reflected to reach the face BC if

$2/3
sinθ≤
2
3
cosθ≥
8
9
sinθ>
8
9
cosθ≤
8
9

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