When the temperature of air over a region increases, the atmospheric pressure .

increases

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decreases

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remains same.

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Solution

The correct option is B decreases
Temperature and pressure are related and varies with respect to one another.At higher temperature the air molecules vibrate more vigorously. Consequently the air expands. If we consider a column of air mass above a unit area, then at higher temperature there would be lesser molecules in the column. As we know that the weight of these air molecules is the pressure, we can conclude that atmospheric pressure decreases with increase in temperature.

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A faulty barometer contains certain amount of air and saturated water vapour. It reads 74.0 cm when the atmospheric pressure is 76.0 cm of mercury and reads 72.10 cm when the atmospheric pressure is 74.0 cm of mercury. Saturation vapour pressure at the air temperature = 1.0 cm of mercury. Find the length of the barometer tube above the mercury level in the reservoir.

Q. When the temperature of air over a region increases, the atmospheric pressure .

Choose the correct option(s)
When the temperature of air in over a region increases:

Choose the correct option(s)
When the temperature of air in an open region increases:

Q. A container holds

600

litres of air at a pressure of

2

atmospheres. If the pressure on the gas is increased to

5

atmospheres, what will its volume become?
(Assume that the temperature remains constant)

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