MCQOPTIONS
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| 1. |
The focal length of the objective lens of a telescope is 50 cm. If the magnification of the telescope is 25, then the focal length of the eye-piece is |
| A. | 12.5 cm |
| B. | 5 cm |
| C. | 2 cm |
| D. | 10 cm |
| Answer» D. 10 cm | |