Wave Optics
A plano convex lens when silvered at its plane surface is equivalent to a concavd mirror of focal length 28 cm when its curved surface is silvered and the plane surface is not silvered it is equivalent to a concave mirror of focal length 10 cm then the refractive index of the material of the lens isA) 9/14B) 14/9C) 17/9D) none
A plano convex lens when silvered at its plane surface is equivalent to a concavd mirror of focal length 28 cm when its curved surface is silvered and the plane surface is not silvered it is equivalent to a concave mirror of focal length 10 cm then the refractive index of the material of the lens is
A) 9/14
B) 14/9
C) 17/9
D) none
