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JEE PHYSICS MCQ: KINETIC THEORY OF GASES
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On any planet, the presence of atmosphere implies (= root mean square velocity of molecules and escape velocity)
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Correct option: A
Option A () is correct because for a planet to have an atmosphere, the root mean square velocity of gas molecules must be much less than the escape velocity.
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Assertion: The pressure exerted by an enclosed ideal gas does not depend on the shape of the container.
Reason: The pressure of an ideal gas depends on the number moles, temperature and volume of the enclosed If is the velocity of sound in air and is the rms velocity, then Four particles have velocities . The root mean square of the particles is (in ) The translational degrees of freedom and rotational degrees of freedom of molecule are: At a given temperature, the pressure of an ideal gas of density is proportional to The mean free path for a gas, with molecular diameter and number density can be expressed as
Reason: The pressure of an ideal gas depends on the number moles, temperature and volume of the enclosed If is the velocity of sound in air and is the rms velocity, then Four particles have velocities . The root mean square of the particles is (in ) The translational degrees of freedom and rotational degrees of freedom of molecule are: At a given temperature, the pressure of an ideal gas of density is proportional to The mean free path for a gas, with molecular diameter and number density can be expressed as