A thin lens made of glass of refractive index 1.5 has a front surface + 11 D power and back surface – 6 D. If this lens is submerged in a liquid of refractive index 1.6, the resulting power of the lens is

see full answer

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

An Intiative by Sri Chaitanya

– 0.5 D

+ 0.5 D

– 0.625 D

+ 0.625 D

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

Total power P=P1+P2=11−6=5D Also flfa= aμg−1μg−1⇒PaPl= aμg−1μg−1 ⇒5Pl=(1.5−1)(1.5/1.6−1)⇒Pl=−0.625D

Watch 3-min video & get full concept clarity