Practicing Success
Practicing Success
CUET Preparation Today
A convex lens of focal length 20 cm and two concave lenses of focal length 10 cm and 30 cm are placed in contact with each other. The focal length of the combined three lenses will be. |
5.5 cm -12 cm 15 cm -15 cm |
-12 cm |
The correct answer is Option (2) → -12 cm |
