Light from a point source in air falls on a spherical glass surface (refractive index, μ = 1.5 and radius of curvature = 50 cm ). The image is formed at a distance of 200 cm from the glass surface ins

Question

Light from a point source in air falls on a spherical glass surface (refractive index, μ = 1.5 and radius of curvature = 50 cm ). The image is formed at a distance of 200 cm from the glass surface inside the glass. The magnitude of distance of the light source from the glass surface is ____ m.

TestHub · Accepted Answer

​ v μ 2 ​ ​ − u μ 1 ​ ​ = R μ 2 ​ − μ 1 ​ ​ 200 1.5 ​ − − x 1 ​ = 50 1.5 − 1 ​ ​ ​ x 1 ​ = 100 1 ​ − 400 3 ​ x = 400 cm x = 4 m ​

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