Show by a diagram, the refraction of two light rays incident parallel to the principal axis on a concave lens by treating it as a combination of a glass block and two triangular glass prisms.

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Solution

This figure shows refraction of two light rays incident upon the
convex lens by treating it as combination of a glass block and one prism above the lens and the other below the lens.

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Show by a diagram, the refraction of two light rays incident parallel to the principal axis on a concave lens by treating it as a combination of a glass block and two triangular glass prisms.

This figure shows refraction of two light rays incident upon theconvex lens by treating it as combination of a glass block and one prism above the lens and the other below the lens.

This figure shows refraction of two light rays incident upon the
convex lens by treating it as combination of a glass block and one prism above the lens and the other below the lens.