AP EAMCET · PHYSICS · Ray Optics
A thin lens of refractive index 1.5 has optical power of \(-5 \mathrm{D}\) in air. Its optical power in a liquid medium with refractive index 1.6 is D.
- A 1
- B 2
- C 4
- D 3
Answer & Solution
Correct Answer
(A) 1
Step-by-step Solution
Detailed explanation
Given, refractive index of lens, \(\mu_g=1.5\) Refractive index of medium, \(\mu_m=1.6\) Power of lens, \(P=-5 \mathrm{D}\) Focal length of lens, \(f_l=\frac{1}{-5} \mathrm{~m}=-20 \mathrm{~cm}\) From lens maker formula, we have…
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