MCQOPTIONS
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| 1. |
A convex lens forms a real image three times larger than the object on a screen. Object and screen are moved until the image becomes twice the size of the object. If the shift of the object is 6 cm. The shift of screen is: |
| A. | 36 cm |
| B. | 72 cm |
| C. | 18 cm |
| D. | 9 cm |
| Answer» B. 72 cm | |