Notifications
Clear all
Science
1
Posts
2
Users
1
Likes
355
Views
0
23/08/2021 4:09 pm
Topic starter
The focal length of a convex lens is 25 cm. What is its power?
1 Answer
1
23/08/2021 4:11 pm
f = 25 cm = 0.25 cm
P = \(\frac{1}{f}\)
= \(\frac{1}{0.25}\) = +4 D.