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| Q. |
From following which equation is used to measure negative pressure in u-tube manometer |
| A. | s2h2 + s1h1 |
| B. | s2h2 - s1h1 |
| C. | - s2h2 + s1h1 |
| D. | - s2h2 - s1h1 |
| Answer» D. - s2h2 - s1h1 | |
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