MHT CET 2023 Physics question
A spherical surface of radius of curvature 'R' separates air from glass of refractive index 1.5. The center of curvature is in the glass. A point object P placed in air forms a real image Q in the glass. The line PQ cuts the surface at point 'O' and PO = OQ = x. Hence the distance 'x' is equal to
Answer: (D)
Solution
Refraction at a single spherical surface: . Taking the direction of the incident light as positive: , , , (real image in glass) and positive (centre of curvature on the glass side). Then
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