An isosceles right angled prism and a convex lens P (focal length \( =40 \mathrm{~cm} \) ) are p...
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An isosceles right angled prism and a convex lens
P (focal length \( =40 \mathrm{~cm} \) ) are placed as shown in the
\( \mathrm{V} \) adjoining figure, and a \( 5 \mathrm{~cm} \) wide strip with the letters LIGHT written on it is placed as indicated. What is the nature and the position of the image formed after refraction through the prism and the lens. Given the critical angle of the glass used for the prism and the lens is \( 42^{\circ} \).
(4)
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