Physics
Heat
Easy
Question
The temperature of an ideal gas is increased from 120K to 480K. If at 120K, the root mean square speed of the gas molecules is ‘v’, then at 480K it will be
- 4v
- 2v
The correct answer is: 2v
Related Questions to study
Physics
At room temperature (270C) the ‘rms’ speed of the molecules of a certain diatomic gas is found to be 1920 ms-1. The gas is
At room temperature (270C) the ‘rms’ speed of the molecules of a certain diatomic gas is found to be 1920 ms-1. The gas is
PhysicsHeat
Physics
The mass of an oxygen molecule is about 16 times that of a hydrogen molecule. At room temperature the ‘rms’ speed of oxygen molecules is v. The ‘rms’ speed of the hydrogen molecules at the same temperature will be
The mass of an oxygen molecule is about 16 times that of a hydrogen molecule. At room temperature the ‘rms’ speed of oxygen molecules is v. The ‘rms’ speed of the hydrogen molecules at the same temperature will be
PhysicsHeat
Physics
At what temperature does the average translational kinetic energy of a molecule in a gas become equal to kinetic energy of an electron accelerated from rest through a potential difference of 1 volt ?(k=1.38x10-23J/k)
At what temperature does the average translational kinetic energy of a molecule in a gas become equal to kinetic energy of an electron accelerated from rest through a potential difference of 1 volt ?(k=1.38x10-23J/k)
PhysicsHeat
Physics
At what temperature the mean kinetic energy of hydrogen molecules increases to such that they will escape out of the gravitational field of earth for ever?
At what temperature the mean kinetic energy of hydrogen molecules increases to such that they will escape out of the gravitational field of earth for ever?
PhysicsHeat
Physics
The root mean square velocity of gas molecules at 00C will be if at N.T.P. its density is 1.43 Kg/ m3
The root mean square velocity of gas molecules at 00C will be if at N.T.P. its density is 1.43 Kg/ m3
PhysicsHeat
Physics
In the two vessels of same volume, atomic hydrogen and helium at pressure 1 atm and 2 atm are filled. If temperature of both the sample is same then average speed of hydrogen atoms < CH > will be related to that of helium < CHe > as
In the two vessels of same volume, atomic hydrogen and helium at pressure 1 atm and 2 atm are filled. If temperature of both the sample is same then average speed of hydrogen atoms < CH > will be related to that of helium < CHe > as
PhysicsHeat
Physics
The respective speeds of five molecules are 2, 1.5, 1.6, 1.6 and 1.2 km/sec. The most probable speed in km/sec will be
The respective speeds of five molecules are 2, 1.5, 1.6, 1.6 and 1.2 km/sec. The most probable speed in km/sec will be
PhysicsHeat
Physics
The molecules of a given mass of a gas have a ‘rms’ velocity of 200 m/sec at 270C and 1.0 x 105 N/m2 pressure. When the temperature is 1270C and pressure is 0.5 x105 N/m2 , the ‘rms‘ velocity in m/sec will be
The molecules of a given mass of a gas have a ‘rms’ velocity of 200 m/sec at 270C and 1.0 x 105 N/m2 pressure. When the temperature is 1270C and pressure is 0.5 x105 N/m2 , the ‘rms‘ velocity in m/sec will be
PhysicsHeat
Physics
At a pressure of 24 x 105 dyne/cm2 , the volume of O2 is 10litre and mass is 20 gm. The ‘rms’ velocity will be (in m/sec)
At a pressure of 24 x 105 dyne/cm2 , the volume of O2 is 10litre and mass is 20 gm. The ‘rms’ velocity will be (in m/sec)
PhysicsHeat
Physics
To what temperature should the hydrogen at 3270C be cooled at constant pressure, so that the root mean square velocity of its molecules become half of its previous value ?
To what temperature should the hydrogen at 3270C be cooled at constant pressure, so that the root mean square velocity of its molecules become half of its previous value ?
PhysicsHeat
Physics
At a certain temperature, the ‘rms’ velocity for O2 is 400 m/sec. At the same temperature, the ‘rms’ velocity for H2 molecules will be
At a certain temperature, the ‘rms’ velocity for O2 is 400 m/sec. At the same temperature, the ‘rms’ velocity for H2 molecules will be
PhysicsHeat
Physics
The total kinetic energy of 8 litres of helium molecules at 5 atmosphere pressure will be (1 atmosphere
The total kinetic energy of 8 litres of helium molecules at 5 atmosphere pressure will be (1 atmosphere
PhysicsHeat
Physics
The value of universal gas constant is 8.3 J/ mole-K, The mean kinetic energy of 32gm of oxygen at -73°C will be
The value of universal gas constant is 8.3 J/ mole-K, The mean kinetic energy of 32gm of oxygen at -73°C will be
PhysicsHeat
Physics
If number of molecules of H2 are double than that of O2 , then ratio of kinetic energy of hydrogen to that of oxygen at 300 K is
If number of molecules of H2 are double than that of O2 , then ratio of kinetic energy of hydrogen to that of oxygen at 300 K is
PhysicsHeat
Physics
At which of the following temperature would the molecules of a gas have twice the average kinetic energy they have at 20°C
At which of the following temperature would the molecules of a gas have twice the average kinetic energy they have at 20°C
PhysicsHeat
