Practicing Success
Practicing Success
CUET Preparation Today
A convex lens and a concave lens, each having the same focal length of 25 cm, are put in contact to form a combination of lenses. What is the power of the combination (in dioptres) ? |
0 25 50 infinite |
0 |
P = \(\frac{f1 . f2}{f1 + f2}\) |
