In a simple barometer,When we invert the barometric tube to place it on the surface of mercury containing trough or tub .Since ,while inverting mercury touches our thumb so it must expand as it expands very fastly.State True or False with reason(explained)
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Explanation:
If the vacuum is replaced with a drop, then the drop will exert some pressure on the mercury and there will be inaccurate readings on the barometer. The barometric height is decreased in this case. So, vacuum is present on top of the mercury inside the tube.
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Explanation:
barometer acts like balance that balance weight of atmospher against the weight of mercury column if air pressure is high mercury will rise
At low pressure murcury goes down
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