MCQOPTIONS
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| 1. |
The magnifying power of a microscope with an objective of 5 mm focal length is 400. The length of its tube is 20 cm. Then the focal length of the eye-piece is [MP PMT 1991] |
| A. | 200 cm |
| B. | 160 cm |
| C. | 2.5 cm |
| D. | 0.1 cm |
| Answer» D. 0.1 cm | |