Science, asked by rachit933728, 26 days ago

draw a diagram in it

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Answered by rhythmsingh82

Explanation:

From laws of reflection,

$< i1 > \: = \: < r1 > = 30 \\ in \: triangle \: abc \: \\ 0 = 180 - 90 - 60 = 30 \\ < i2 > = 30 \\ hence \: < r2 > = 60 \\ the \: angle \: of \: incidence \: is \: 60 \: degree$

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draw a diagram in it