Question

5. The power of a lens is -2.3 D. What is the type of lens? Also find its focal lengths​

Answer 1

Answer:

power= 1/f

-2.3=1/f

f=1/-2.3

Answer 2

$concave \: lens \:$

$power \: = \frac{1}{f{m}}$

$- 2.3= \frac{1}{f}$

$f = - 43.42cm$