- 1(current)
Q. No.Given below are two statements:
| Assertion (A): | A double convex lens \((\mu=1.5)\) has a focal length \(10~\text{cm}.\) When the lens is immersed in water \(\left(\mu=\frac{4}{3}\right)\) its focal length becomes \(20~\text{cm}.\) |
| Reason (R): | \(\dfrac{1}{f}=\dfrac{\mu_1-\mu_m}{\mu_m}\left(\dfrac{1}{R_1}-\dfrac{1}{R_2}\right)\) |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Refraction at Curved Surface |
Level 4: Below 35%
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- 1(current)
Q. No.
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