Refracting surface shape!

Classical Mechanics Level 5

A parallel beam of light falls on a boundary separating two media of refracting indices \(1\) & \(2\) as shown. The beam is brought to a single point \(P\), at a distance \(2m\) from \(O\). Refracting surface in \(x-y\) plane is:

(A) Parabolic

(B) Elliptical

(C) Hyperbolic

(D) Circular


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