CUET · PHYSICS · PYQ PAPER 2025
If focal length of a concave lens is 50 cm, then the power of the lens would be
- A +5 D
- B - 5 D
- C +2 D
- D - 2 D
Answer & Solution
Correct Answer
(D) - 2 D
Step-by-step Solution
Detailed explanation
\( f = -50 \text{ cm} = -0.5 \text{ m} \) \( P = \frac{1}{f} = \frac{1}{-0.5} = -2 \text{ D} \)
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