Mean Free Path and Mean Time between Two Successive Collisions
PHXI13:KINETIC THEORY

360318 The diameter of a gas molecule is \(2.4 \times 10^{-10} \mathrm{~m}\). The mean free path of gas molecule at NTP is

1 \(2.46 \times {10^{ - 6}} m\)
2 \(1.46 \times {10^{ - 7}} m\)
3 \(2.46 \times {10^{ - 7}} m\)
4 \(1.46 \times {10^{ - 6}} m\)
PHXI13:KINETIC THEORY

360319 In a vessel containing an ideal gas the pressure is \(1.1 \times {10^5} Pa\), temperature is \(27^\circ C\) & diameter of molecules is \(0.8 \,nm\). Find the mean free path of the molecules if Boltzman constant is \(1.38 \times {10^{ - 23}} J/K\)

1 \(13.2 \,\,nm\)
2 \(132 \,\,nm\)
3 \(32 \,\,nm\)
4 \(1.32 \,\,nm\)
PHXI13:KINETIC THEORY

360320 If the temperature of a gas is doubled at constant pressure then mean free path becomes

1 Same
2 Half
3 Double
4 One fourth
PHXI13:KINETIC THEORY

360321 Assertion :
When the number density of gas molecules increases, there is a decrease in their mean free path.
Reason :
With more molecules per unit volume of the gas, the chances of molecular collisions increases, thereby decreasing mean free path.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI13:KINETIC THEORY

360318 The diameter of a gas molecule is \(2.4 \times 10^{-10} \mathrm{~m}\). The mean free path of gas molecule at NTP is

1 \(2.46 \times {10^{ - 6}} m\)
2 \(1.46 \times {10^{ - 7}} m\)
3 \(2.46 \times {10^{ - 7}} m\)
4 \(1.46 \times {10^{ - 6}} m\)
PHXI13:KINETIC THEORY

360319 In a vessel containing an ideal gas the pressure is \(1.1 \times {10^5} Pa\), temperature is \(27^\circ C\) & diameter of molecules is \(0.8 \,nm\). Find the mean free path of the molecules if Boltzman constant is \(1.38 \times {10^{ - 23}} J/K\)

1 \(13.2 \,\,nm\)
2 \(132 \,\,nm\)
3 \(32 \,\,nm\)
4 \(1.32 \,\,nm\)
PHXI13:KINETIC THEORY

360320 If the temperature of a gas is doubled at constant pressure then mean free path becomes

1 Same
2 Half
3 Double
4 One fourth
PHXI13:KINETIC THEORY

360321 Assertion :
When the number density of gas molecules increases, there is a decrease in their mean free path.
Reason :
With more molecules per unit volume of the gas, the chances of molecular collisions increases, thereby decreasing mean free path.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI13:KINETIC THEORY

360318 The diameter of a gas molecule is \(2.4 \times 10^{-10} \mathrm{~m}\). The mean free path of gas molecule at NTP is

1 \(2.46 \times {10^{ - 6}} m\)
2 \(1.46 \times {10^{ - 7}} m\)
3 \(2.46 \times {10^{ - 7}} m\)
4 \(1.46 \times {10^{ - 6}} m\)
PHXI13:KINETIC THEORY

360319 In a vessel containing an ideal gas the pressure is \(1.1 \times {10^5} Pa\), temperature is \(27^\circ C\) & diameter of molecules is \(0.8 \,nm\). Find the mean free path of the molecules if Boltzman constant is \(1.38 \times {10^{ - 23}} J/K\)

1 \(13.2 \,\,nm\)
2 \(132 \,\,nm\)
3 \(32 \,\,nm\)
4 \(1.32 \,\,nm\)
PHXI13:KINETIC THEORY

360320 If the temperature of a gas is doubled at constant pressure then mean free path becomes

1 Same
2 Half
3 Double
4 One fourth
PHXI13:KINETIC THEORY

360321 Assertion :
When the number density of gas molecules increases, there is a decrease in their mean free path.
Reason :
With more molecules per unit volume of the gas, the chances of molecular collisions increases, thereby decreasing mean free path.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI13:KINETIC THEORY

360318 The diameter of a gas molecule is \(2.4 \times 10^{-10} \mathrm{~m}\). The mean free path of gas molecule at NTP is

1 \(2.46 \times {10^{ - 6}} m\)
2 \(1.46 \times {10^{ - 7}} m\)
3 \(2.46 \times {10^{ - 7}} m\)
4 \(1.46 \times {10^{ - 6}} m\)
PHXI13:KINETIC THEORY

360319 In a vessel containing an ideal gas the pressure is \(1.1 \times {10^5} Pa\), temperature is \(27^\circ C\) & diameter of molecules is \(0.8 \,nm\). Find the mean free path of the molecules if Boltzman constant is \(1.38 \times {10^{ - 23}} J/K\)

1 \(13.2 \,\,nm\)
2 \(132 \,\,nm\)
3 \(32 \,\,nm\)
4 \(1.32 \,\,nm\)
PHXI13:KINETIC THEORY

360320 If the temperature of a gas is doubled at constant pressure then mean free path becomes

1 Same
2 Half
3 Double
4 One fourth
PHXI13:KINETIC THEORY

360321 Assertion :
When the number density of gas molecules increases, there is a decrease in their mean free path.
Reason :
With more molecules per unit volume of the gas, the chances of molecular collisions increases, thereby decreasing mean free path.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.