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MHT CET202313 May 2023Morning ShiftPhysicsRay OpticsActual

A spherical surface of radius of curvature ' R ' separates air from glass of refractive index 1.5. The centre of curvature is in the glass. A point object P placed in air forms a real image Q in the glass. The line P Q cuts the surface at point ' O ' and PO = OQ = x . Hence the distance ' x ' is equal to

Options

  1. A1.5 R
  2. B2 R
  3. C3 R
  4. D5 R

Correct answer

D. 5 R

Step-by-step solution

Given: u =- x , v =+ x We know, aligned & n ₂ v - n ₁ u = n ₂- n ₁ R & 1.5 x + 1 x = 0.5 R & 2.5 x = 0.5 R & x =5 R aligned

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