Question

Find the focal length of a lens whose power is -4 D,one word answar ​

Answer 1

Answer:

-0.25m

Explanation:

f = 1/Power

thats it ,like bro is this a troll question or u just that blunt :)

Answer 2

Question:-

• Find the focal length of a lens whose power is -4 D.

Answer:-

Let,

  P = -4 D

f = $\frac{1}{P}$ = $\frac{1}{-4}$ = - 0.25 m.