Physics-
General
Easy
Question
Pressure versus temperature graph of an ideal gas is as shown in figure. Density of the gas at point A is 
. Density at B will be :
The correct answer is:
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Physics-
Volume versus temperature graph of two moles of helium gas is as shown in figure. The ratio of heat absorbed and the work done by the gas in process 1-2 is :
Volume versus temperature graph of two moles of helium gas is as shown in figure. The ratio of heat absorbed and the work done by the gas in process 1-2 is :
Physics-General
Physics-
P-V diagram of an ideal gas is as shown in figure. Work done by the gas in the process ABCD is :
P-V diagram of an ideal gas is as shown in figure. Work done by the gas in the process ABCD is :
Physics-General
Physics-
A gas is expanded from volume 
to 
under three different processes. Process 1 is isobaric, process 2 is isothermal and process 3 is adiabatic. Let 
and 
be the change in internal energy of the gas in these three processes. Then :
A gas is expanded from volume to under three different processes. Process 1 is isobaric, process 2 is isothermal and process 3 is adiabatic. Let and be the change in internal energy of the gas in these three processes. Then :
Physics-General
Physics-
Ideal gas is taken through the process shown in the figure :
Ideal gas is taken through the process shown in the figure :
Physics-General
Physics-
Pressure versus density graph of an ideal gas is shown in figure :
Pressure versus density graph of an ideal gas is shown in figure :
Physics-General
Physics-
Three moles of an ideal monoatomic gas performs a cycle 
as shown. The gas temperatures in different states are, 
and 
. The work done by the gas during the cycle is :
Three moles of an ideal monoatomic gas performs a cycle as shown. The gas temperatures in different states are, and . The work done by the gas during the cycle is :
Physics-General
Physics-
An ideal monoatomic gas undergoes a cyclic process ABCA as shown in the figure. The ratio of heat absorbed during AB to the work done on the gas during BC is :
An ideal monoatomic gas undergoes a cyclic process ABCA as shown in the figure. The ratio of heat absorbed during AB to the work done on the gas during BC is :
Physics-General
Physics-
In a cyclic process shown in the figure an ideal gas is adiabatically taken from B to A, the work done on the gas during the process B → A is 30 J , when the gas is taken from A→B the heat absorbed by the gas is 20 J. The change in internal energy of the gas in the process A→B is :
In a cyclic process shown in the figure an ideal gas is adiabatically taken from B to A, the work done on the gas during the process B → A is 30 J , when the gas is taken from A→B the heat absorbed by the gas is 20 J. The change in internal energy of the gas in the process A→B is :
Physics-General
Physics-
3 moles of an ideal monoatomic gas performs ABCDA cyclic process as shown in figure below. The gas temperatures are 
and 
. The work done by the gas is (approximately ) 
3 moles of an ideal monoatomic gas performs ABCDA cyclic process as shown in figure below. The gas temperatures are and . The work done by the gas is (approximately )
Physics-General
Physics-
A cyclic process ABCD is shown below in the given P-V diagram. In the following answers the one that represents the same process as in P-V diagram :
A cyclic process ABCD is shown below in the given P-V diagram. In the following answers the one that represents the same process as in P-V diagram :
Physics-General
Physics-
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done on the system in going from A→B→C is 50 J and 20 cal heat is given to the system. The change in internal energy between A and C is
The P-V diagram of a system undergoing thermodynamic transformation is shown in figure. The work done on the system in going from A→B→C is 50 J and 20 cal heat is given to the system. The change in internal energy between A and C is
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Physics-
In the figure given two processes A and B are shown by which a thermo-dynamical system goes from initial to final state F. If 
and 
are respectively the heats supplies to the system then
In the figure given two processes A and B are shown by which a thermo-dynamical system goes from initial to final state F. If and are respectively the heats supplies to the system then
Physics-General
Physics-
A monoatomic ideal gas, initially at temperature 
, is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature. 
by releasing the piston suddenly. IF 
and 
are teh lengths of the gas column before and after expansion respectively, then 
is given by
A monoatomic ideal gas, initially at temperature , is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature. by releasing the piston suddenly. IF and are teh lengths of the gas column before and after expansion respectively, then is given by
Physics-General
Physics-
Power of a man who can chew 0.3 kg ice in one minute is(in Cal/s)
Power of a man who can chew 0.3 kg ice in one minute is(in Cal/s)
Physics-General
Physics-
The temperature of equal masses of three different liquids A, B and C are 
and 
respectively. The temperature when A and B are mixed is 
and when 
and 
are mixed it is 
. What should be the temperature when A and C are mixed ?
The temperature of equal masses of three different liquids A, B and C are and respectively. The temperature when A and B are mixed is and when and are mixed it is . What should be the temperature when A and C are mixed ?
Physics-General
