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JEE Main202117 Mar 2021Evening ShiftPhysicsRay OpticsActual

The image of an object placed in air formed by a convex refracting surface is at a distance of 10   m behind the surface. The image is real and is at 2 r d 3 of the distance of the object from the surface. The wavelength of light inside the surface is 2 3 times the wavelength in air. The radius of the curved surface is x 13   m , the value of x is ______ .

Correct answer

0

Step-by-step solution

λ m = λ a μ ⇒ μ = 3 2 μ v - 1 u = μ - 1 R ⇒ 3 2 × 10 + 1 15 = 3 2 - 1 R ⇒ R = 30 13   m = 30

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