7 An object O is kept in air in front of a thin plano convex

Last updated: 6/7/2023

7 An object O is kept in air in front of a thin plano convex lens of radius of curvature 10cm It s refractive index is 3 1 5cm 3 20cm 2 and medium towards right of 4 plane surface is water of refractive index should be the distance x of the object so that the rays become parallel finally I 3 2 10cm 4 None of these What