Question

1 dioptre of power of a lens is whose focal length is?

Answer 1

Thereby, The focal length of the lens is hundred centimetre.

Answer 2

$1dioptre \: is \: power \: of \: lens \: \\ whose \: focal \: length \: is \: 1cm \: \\ \\ 1d= \frac{1}{1m}$

$hope \: my \: answer \: helps \: you$