The power of a lens is - 2.0 D. Find its focal length and it's kind????
Answer is 50cm..
Answers
Answered by
3
Answer:
power of lens = -2
we know that,
power = 1/f
-2 = 100/f ( in cm.)
f = 100/2
f = 50 cm.
f is positive so it's a convex lens
Similar questions