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प्रश्न
The lens A has a focal length of 25 cm whereas another lens B has a focal length of 60 cm. Giving reason state, which lens has more power: A or B.
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उत्तर
Power varies inversely with the focal length. Lens A has a small focal length and hence, more power.
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संबंधित प्रश्न
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| Column - I | Column - II | ||
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| 2 | Pupil | b | Far point comes closer |
| 3 | Ciliary muscles | c | near point moves away |
| 4 | Myopia | d | Screen of the eye |
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