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				| 1. | In a U-tube mercury manometer, one end is exposed to the atmosphere and the other end is connected to a pressurized gas. The gauge pressure of the gas is found to be 40 kPa. Now, we change the manometric fluid to water. The height difference changes by: (ρmercury = 13600 kg/m3, ρwater = 1000 kg/m3).$ | 
| A. | 1260% | 
| B. | 92.64 % | 
| C. | Remains unchanged (0%) | 
| D. | 13.6% | 
| Answer» B. 92.64 % | |