1.

Light is incident at surface PQ of prism as shown in column I then match the column I with column II (Surrounding medium is air in all cases)

Answer» Correct Answer - [(A)P(B)Q(C)RS]
(A) `r_(1)=30^(@),r_(2)=70^(@)` c=45^(@)`
(B) `r_(1)=30^(@) r_(2)=0^(@)` light emerges normally from surface QR
(C) `1xxsin90^(@) = sqrt(2)xxsinr_(1)`
`r_(1)=45^(@)`
`sqrt(2)xx1/sqrt(2)=1xxsin e`
`e= 90^(@)`
Light emergies grazing from surface QR


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