Physics
Heat
Easy
Question
A system is provided with 200 cal of heat and the work done by the system on the surrounding is 40 J. Then its internal energy
- Increases by 600 J
- Decreases by 800 J
- Increases by 800 J
- Decreases by 50 J
The correct answer is: Increases by 800 J
Related Questions to study
Physics
Which of the following statements is correct for any thermodynamic system
Which of the following statements is correct for any thermodynamic system
PhysicsHeat
Physics
In a thermodynamic system working substance is ideal gas, its internal energy is in the form of
In a thermodynamic system working substance is ideal gas, its internal energy is in the form of
PhysicsHeat
Physics
Which of the following parameters does not characterize the thermodynamic state of matter
Which of the following parameters does not characterize the thermodynamic state of matter
PhysicsHeat
Physics
The specific heat of hydrogen gas at constant pressure is 
and at constant volume is 
. If one kilogram hydrogen gas is heated from 
at constant pressure, the external work done on the gas to maintain it at constant pressure is
The specific heat of hydrogen gas at constant pressure is
and at constant volume is . If one kilogram hydrogen gas is heated from at constant pressure, the external work done on the gas to maintain it at constant pressure is
PhysicsHeat
Physics
In a given process for an ideal gas, 
Then for the gas
In a given process for an ideal gas, Then for the gas
PhysicsHeat
Physics
Which of the following is not a thermodynamics co-ordinate
Which of the following is not a thermodynamics co-ordinate
PhysicsHeat
Physics
Which of the following can not determine the state of a thermodynamic system
Which of the following can not determine the state of a thermodynamic system
PhysicsHeat
Physics
For free expansion of the gas which of the following is true
For free expansion of the gas which of the following is true
PhysicsHeat
Physics
If 
represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as
where 
is the internal energy
If represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as
where is the internal energy
PhysicsHeat
Physics
If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be
If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be
PhysicsHeat
Physics
A perfect gas contained in a cylinder is kept in vacuum. If the cylinder suddenly bursts, then the temperature of the gas
A perfect gas contained in a cylinder is kept in vacuum. If the cylinder suddenly bursts, then the temperature of the gas
PhysicsHeat
Physics
A thermodynamic process of one mole ideal monoatomic gas. The efficiency of cyclic process ABCA will be
A thermodynamic process of one mole ideal monoatomic gas. The efficiency of cyclic process ABCA will be
PhysicsHeat
Physics
A sample of an ideal gas is taken through a cycle a shown in figure. It absorbs
50 J of energy during the process AB, no heat during BC, rejects 70 J during
CA. 40J of work is done on the gas during BC . Internal energy of gas at A is 1500 J, the internal energy at C would be
A sample of an ideal gas is taken through a cycle a shown in figure. It absorbs
50 J of energy during the process AB, no heat during BC, rejects 70 J during
CA. 40J of work is done on the gas during BC . Internal energy of gas at A is 1500 J, the internal energy at C would be
PhysicsHeat
Physics
A tyre pumped to a pressure 3.375 atm at 27oC suddenly burts. What is the final temperature 
A tyre pumped to a pressure 3.375 atm at 27oC suddenly burts. What is the final temperature
PhysicsHeat
Physics
When 1 mole of a monatomic gas is mixed with 3 moles of a diatomic gas , the value of adiabatic exponent 
for the mixture is :
When 1 mole of a monatomic gas is mixed with 3 moles of a diatomic gas , the value of adiabatic exponent for the mixture is :
PhysicsHeat
