11th Physics Weekly Test - 4 ( Kinetic Theory of Gases )

MABS Institution

11th Physics Weekly Test - 4 ( Kinetic Theory of Gases )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 3 - Answer All Question

Describe the Brownian motion.

Estimate the total number of molecules inclusive of oxygen, nitrogen, water vapour and other consituents in a room of capacity 30 m³ at a temperature of 30°C and 1 atmosphere pressure.

At what temperature the rms speed of oxygen atom equal to rms speed of helium gas atom at-10°C?
Atomic mass of helium = 4
Atomic mass of oxygen = 32

Explain in detail the Maxwell Boltzmann distribution function.

On which factors does the mean free path depend?

In the upper part of the atmosphere the kinectic temperature of air is of the order of 1000 K, even then one feels severe cold there. Why?

Equal masses of O₂ and He gases are supplied equal amount of heat. Which gas will undergo a greater temperature rise and why?

Derive the expression for mean free path of the gas.

Explain how does a gas exert pressure on the bases of kinetic theory of gases.

Derive the expression of pressure exerted by the gas on the walls of the container.

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11th Physics Weekly Test - 4 ( Kinetic Theory of Gases )

MABS Institution

11th Physics Weekly Test - 4 ( Kinetic Theory of Gases )-Aug 2020

Part - A

Generic 3 - Answer All Question

Describe the Brownian motion.

Estimate the total number of molecules inclusive of oxygen, nitrogen, water vapour and other consituents in a room of capacity 30 m3 at a temperature of 30°C and 1 atmosphere pressure.

At what temperature the rms speed of oxygen atom equal to rms speed of helium gas atom at-10°C? Atomic mass of helium = 4 Atomic mass of oxygen = 32

Explain in detail the Maxwell Boltzmann distribution function.

On which factors does the mean free path depend?

In the upper part of the atmosphere the kinectic temperature of air is of the order of 1000 K, even then one feels severe cold there. Why?

Equal masses of O2 and He gases are supplied equal amount of heat. Which gas will undergo a greater temperature rise and why?

Derive the expression for mean free path of the gas.

Explain how does a gas exert pressure on the bases of kinetic theory of gases.

Derive the expression of pressure exerted by the gas on the walls of the container.

Comment

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11th Physics Monthly Test - 3 ( Oscillations )

Tamilnadu Stateboardszs - Class

Estimate the total number of molecules inclusive of oxygen, nitrogen, water vapour and other consituents in a room of capacity 30 m³ at a temperature of 30°C and 1 atmosphere pressure.

At what temperature the rms speed of oxygen atom equal to rms speed of helium gas atom at-10°C?
Atomic mass of helium = 4
Atomic mass of oxygen = 32

Equal masses of O₂ and He gases are supplied equal amount of heat. Which gas will undergo a greater temperature rise and why?