- 1(current)
Q. No.A plane convex lens \((\mu= 1.5)\) has a radius of curvature \(10~\text{cm}\). It is silvered on its plane surface. The focal length of the lens after silvering is:
1. \(10\) cm
2. \(20\) cm
3. \(15\) cm
4. \(25\) cm
Subtopic: Â Lens Makers' Formula |
 58%
From NCERT
AIPMT - 2000
To view explanation, please take trial in the course.
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A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then its focal length will:
| 1. | become zero. |
| 2. | become infinite. |
| 3. | become small, but non-zero. |
| 4. | remain unchanged. |
Subtopic: Â Lens Makers' Formula |
 70%
From NCERT
AIPMT - 2003
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
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Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
- 1(current)
Q. No.
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