Question

power of a lens is 1.5 D. what is the focal length of lens​

Answer 1

SolutioN :-

Power of lens = 1.5 D

$\large\longrightarrow \sf P = \frac{1}{f} \\ \\\large\longrightarrow \sf 1.5 = \frac{1}{f} \\ \\\large\longrightarrow \sf f = \frac{1}{1.5} \\ \\\large\longrightarrow \sf f = 0.66 \: m$

Answer 2

Answer:

0.66 is the required answer. The above explanation of viper is correct