Parallel rays of light are falling on convex spherical surf…

Physics Ray Optics JEE Main 2019 MCQ (Single Correct)

Parallel rays of light are falling on convex spherical surface of radius of curvature R = 20 cm as shown. Refractive index of the medium is μ = 1.5. After refraction from the spherical surface parallel rays -

Actually meet at some point

Appears to meet after extending the refracted rays backwards

Meet (or appears to meet) at a distance of 30 cm from the spherical surface

Meet (or appears to meet) at a distance of 60 cm from the spherical surface

Text Solution

Verified by Experts

The correct answer is:

CHECK THE SOLUTION.

(a, d)

Using = ,

– =

⇒ v = + 60 cm

since v is positive, the rays actually meet

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