SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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At a constant volume, the ____ of a gas of fixed mass is directly proportional to its ____
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height, absolute temperature
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displacement, surface area
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pressure, absolute temperature
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None of the above
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Explanation:
Detailed explanation-1: -Charles’ law states that the volume of a fixed mass of a gas increases or decreases by 1/273.15 of its volume at 0oC for each degree rise or fall in temperature, if pressure is kept constant. Q. Pressure remaining constant, the volume of a fixed mass of a gas is directly proportional to its absolute temperature.
Detailed explanation-2: -At constant temperature and pressure the volume of a gas is directly proportional to the number of moles of gas. At constant temperature and volume the pressure of a gas is directly proportional to the number of moles of gas. Or you could think about the problem a bit and use PV=nRT. N2O is placed in a piston.
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