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A converging lens A of focal length 10 cm is separated by 4 cm from a diverging lens B of focal length 15 em. A parallel beam of light falls on A, emerges from B and is foccussd at a point I. Find the position of I |
| Answer» A converging lens A of focal length 10 cm is separated by 4 cm from a diverging lens B of focal length 15 em. A parallel beam of light falls on A, emerges from B and is foccussd at a point I. Find the position of I | |