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A mercury manometer is attached to a section of the pipe shown in the figure. Mercury levels are indicated when there is no water flowing through the pipe. When water starts flowing through the pipe continuously at constant rate in the direction of the arrow, the level of mercury at B.
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- When flow starts, pressure at B will not be lower than pressure at A, therefore level of mercury at B rises.
- When flow starts, pressure at B will be lower than pressure at A, therefore level of mercury at B rises.
- A and B
- None of the above
Correct Option: A
When flow starts, pressure at B will be lower than pressure at A, therefore level of mercury at B rises.
