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| Q.50 | Find the focal length of a convex lens of focal length 50 cm in contact with a concave lens of focal length 40 cm? Also find the correct lens system? | |
| Ans | A. 300 cm, converging lens | |
| B. 300 cm, diverging lens | ||
| C. 200 cm, diverging lens | ||
| D. 200 cm, converging lens |
Correct Ans Provided: C
