Question

A lens a power of 3 dioptze, then its focal length is
approximately
(A)'0.3 cm
(B) 33 cm
(c) 3 cm
(0) 33m​

Answer 1

Answer:

33 cm is the focal length

Answer 2

Answer:

(c) 3cm

Explanation:

p= 1/f

f = 1/p

f = 1/3

f = 0.33m

f = 3cm