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| 1. |
Calculate the magnitude of capillary effect in millimeters in a glass tube of 7mm diameter, when immersed in mercury. The temperature of the liquid is 25 and the values of surface tension of mercury at 25 is 0.51 N/m. The angle of contact for mercury is 130 . |
| A. | 140 |
| B. | 280 |
| C. | 170 |
| D. | 210 |
| Answer» B. 280 | |