Question

what is meant by power lens? What is the SI unit of power of lens

Answer 1

Heya!!!!

power of lens define as reciprocal of focal length in metre.

$p = 1 \div focal \: \: lenth \: of \: lens \:$


SI unit of focal length is dioptre.(D).


hopes it helps !!!!!!!!!!

thanks

Answer 2

Power of lens is the ability of the lens to converge the light rays falling on it.


SI unit is dioptre