CUET Preparation Today
An eye specialist prescribes spectacles having a combination of a converging lens of focal length 25 cm and a diverging lens of focal length of 20 cm. The power of the combination of two lenses (in dioptre) is |
+1.0 -1.0 +1.1 +2.0 |
-1.0 |
The correct answer is Option (2) → -1.0 |
