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Molecular Physics | Thermodynamics
a gas is compressed from a volume of 2m3 to a volume of 1m3 at a constant pressure of 100N/m2. Then it is heated at constant volume by supplying 150J of energy. As a result, the internal energy of the gas increases/decreases by??
Molecular Physics | Thermodynamics
Which of the following is NOT true about conduction as a means of heat transfer?
a. transfer of heat occurs through sucessive collisions of the atoms or molecules
b. the average kinetic energy of the atoms or molecules is greater in the hot object than in the cold javascript:void(0)object
c. the transfer process requires a material medium for it to take place
d.there is net translational motion of the atoms or molecules from their mean equilibrium positionsjavascript:void(0)
a. transfer of heat occurs through sucessive collisions of the atoms or molecules
b. the average kinetic energy of the atoms or molecules is greater in the hot object than in the cold javascript:void(0)object
c. the transfer process requires a material medium for it to take place
d.there is net translational motion of the atoms or molecules from their mean equilibrium positionsjavascript:void(0)
Molecular Physics | Thermodynamics
A 0.5kg piece of metal (c = 600/kgK) at 300 degree celcius is dumped into a large pool of water at 20 degrees celcius. Assuming the change in temperature of water to be negligible, calculate the overall change in entropy for the system
85.5J/K
67.4J/K
122.3J/K
202.3J/K
85.5J/K
67.4J/K
122.3J/K
202.3J/K
Molecular Physics | Thermodynamics
The ratio of the speed of the electron in the ground state of hydrogen to the speed of light in vacuum is
Molecular Physics | Thermodynamics
We have two thermometers B and W. The bulb of B is painted black and that of W is silver white. Both of them are taken from a cold room and exposed to the sun. How will their readings change after the exposure:-
(1) Reading of B will increase faster than that of W
(2) Reading of B will increase slower than that of W
(3) Reading of both will increase in the same manner
(4) All are correct
(1) Reading of B will increase faster than that of W
(2) Reading of B will increase slower than that of W
(3) Reading of both will increase in the same manner
(4) All are correct
Molecular Physics | Thermodynamics
Two gases have same initial pressure, volume and temperature. They expand to the same final volume,one adiabatically and the other isothermally
(1) The final pressure is greater for isothermal process
(2) The final temperature is greater for the isothermal process
(3) The work done by the gas is greater for the isothermal process
(4) All of these
(1) The final pressure is greater for isothermal process
(2) The final temperature is greater for the isothermal process
(3) The work done by the gas is greater for the isothermal process
(4) All of these
Molecular Physics | Thermodynamics
When a hot iron piece of 50 g at 80°c is dropped into 150 g calorimeter with 100g water its temperature raised by 10°c calculate the equillibrium temperature in the specific heat capacity of iron is 0.46 j / g °c and of calorimeter is 0. 0 3 4 j/g °c.
Molecular Physics | Thermodynamics
In an energy recycling process x gram of steam at 100 ◦ C becomes water at 100 ◦ C which converts Y gram of ice at 0◦ C into water at 100 ◦ C. The ratio of X and Y will be
Molecular Physics | Thermodynamics
X mole of diatomic gas at tempT is kept in a container. when Q amount of heat is supplied to gas its temp remains same but Y moles of it dissociates to monoatomic gas, then value ofQ is??
a)2YRT
b)YRT/2
c)3YRT/2
d)5YRT/2
a)2YRT
b)YRT/2
c)3YRT/2
d)5YRT/2
Molecular Physics | Thermodynamics
the pressure inside two soap bubbles is 1.01atm and 1.02atm .the ratio of resp volumes is????
