For fixed values of radii of curvature of lens, power of the lens will be _________.
Fill in the blank with the correct answer from the options given below.
Answer & explanation
Correct answer: option 1
$ \frac{1}{F} = (\mu -1) (\frac{1}{R_1} - \frac{1}{R_2})$
since radius of curvature is fixed hence $ P = \frac{1}{F} \propto (\mu - 1)$
The correct answer is Option (1) → $P \propto(\mu-1)$