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NEET 2016 Physics question

PhysicsKinetic Theory of GasesNEET 2016

The molecules of a given mass of a gas have r.m.s velocity of at and pressure. When the temperature and pressure of the gas are respectively, and , the r.m.s. velocity of its molecules in is:

Answer: (2)

Solution

The r.m.s. speed is ; for a given gas it depends only on the absolute temperature and not on the pressure. , . Therefore

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Question ID VK-091859