Which of the following statement(s) is/are correct? (A) The power of a lens is the ability of the lens to converge or diverge the incident rays. Choose the correct answer from the options given below: |
(A) and (C) only (B), (C) and (D) only (A) and (B) only (A) only |
(A) and (C) only |
The correct answer is Option (1) → (A) and (C) only Explanation: (A) True — Power of a lens represents its ability to converge or diverge light rays. (B) False — The S.I. unit of power is dioptre (D), but focal length is measured in metres, not centimetres. (C) True — Power $P = \frac{1}{f}$, so a larger focal length means smaller power. (D) False — For lenses in contact, the total power is the algebraic sum of their powers: $P = P_1 + P_2 + P_3 + \dots$ |