MCQOPTIONS
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| 1. |
Find the focal length (in cm) of a convex lens if object is placed at 10 cm from the lens and image is obtained at 50 cm from the lens on the same side? |
| A. | 12.5 |
| B. | 25 |
| C. | 10 |
| D. | 7.5 |
| Answer» B. 25 | |