In the given figure a parallel beam of ligth is incident on the upper part of a prism of angle `1.8^(@)` and `R.I.3//2` . The li

In the given figure a parallel beam of ligth is incident on the upper part of a prism of angle `1.8^(@)` and `R.I.3//2` . The light coming out of the prism falls on a concave mirror of radius of curvature `20 cm`. The distance of the point (where the rays are focused after reflrction from the mirror) from the pricipal axis is: [use `pi=3.14`]

A. `9 cm`
B. `1.57 mm`
C. `3.14 mm`
D. none of these

In the given figure a parallel beam of ligth is incident on the upper part of a prism of angle `1.8^(@)` and `R.I.3//2` . The light coming out of the

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