A parallel beam of monochromatic light falls on a thin converging lens whose material has RI 1.5. The light emerges after two internal reflections one at each face of the lens. The focal length of the lens for this configuration is (Radius of curvature of each face is R)

A parallel beam of monochromatic light falls on a thin converging lens

1.	A parallel beam of monochromatic light falls on a thin converging lens whose material has RI 1.5. The light emerges after two internal reflections one at each face of the lens. The focal length of the lens for this configuration is (Radius of curvature of each face is R)
Answer» A parallel beam of monochromatic light falls on a thin converging lens whose material has RI 1.5. The light emerges after two internal reflections one at each face of the lens. The focal length of the lens for this configuration is (Radius of curvature of each face is R)

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A parallel beam of monochromatic light falls on a thin converging lens whose material has RI 1.5. The light emerges after two internal reflections one at each face of the lens. The focal length of the lens for this configuration is (Radius of curvature of each face is R)

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