Behind a thin converging lens having both the surfaces of the same radius 10 cm, a plane mirror has been placed.The image of an object at a distance 40 cm from the lens is formed at the same position. What is the refractive index of the lens?

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

1.5

None

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

‘O’ acts as focal point1f=(μ−1)1R1−1R2140=(μ−1)110+110140=(μ−1)210⇒μ=98

Watch 3-min video & get full concept clarity