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प्रश्न
State differences between a convex and a concave lens in their
- Appearance, and
- action on the incident light.
अंतर स्पष्ट करें
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उत्तर
| Convex lens | Concave lens | |
| a) | Its edges are narrow, and its centre is thick. | Its periphery is thick, and its centre is thin. |
| b) | It brings the primary axis closer to the incident light. | It diverts the incident light away from the main axis. |
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