Physics
Heat
Easy
Question
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
The correct answer is:
Related Questions to study
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
Physics
The molar heat capacity of a gas in a process
The molar heat capacity of a gas in a process
PhysicsHeat
Physics
A fixed mass of a gas is adiabatically made to expand to double its volume and then isochorically heated to bring the gas to the original pressure . The ratio of final to initial temperature will be
A fixed mass of a gas is adiabatically made to expand to double its volume and then isochorically heated to bring the gas to the original pressure . The ratio of final to initial temperature will be
PhysicsHeat
Physics
Find the amount of work done to increase the temperature of one mole of an ideal gas by 30°C , if it is expanding under condition . R is gas constant
Find the amount of work done to increase the temperature of one mole of an ideal gas by 30°C , if it is expanding under condition . R is gas constant
PhysicsHeat
Physics
During an experiment an ideal gas is found to obey an additional law VP2 = constant. The gas is initially at temperature T and volume V. What wiII be the temperature of the gas when it expands to a volume 2V?
During an experiment an ideal gas is found to obey an additional law VP2 = constant. The gas is initially at temperature T and volume V. What wiII be the temperature of the gas when it expands to a volume 2V?
PhysicsHeat
Physics
A polytropic process for an ideal gas is represented by equation PVn = constant. If g is ratio of specific heats , then value of n for which molar heat capacity of the process is negative, is given as :
A polytropic process for an ideal gas is represented by equation PVn = constant. If g is ratio of specific heats , then value of n for which molar heat capacity of the process is negative, is given as :
PhysicsHeat
Physics
If the ratio of specific heat of a gas at constant pressure to that at constant volume is , the change i n internal energy of the mass of gas , when the volume changes from V to 2V at constant pressure p , is
If the ratio of specific heat of a gas at constant pressure to that at constant volume is , the change i n internal energy of the mass of gas , when the volume changes from V to 2V at constant pressure p , is
PhysicsHeat
Physics
One mole of an idea l gas at a temperature T1K expands slowly according to the law Its final temperature is T2K . The work done by the gas is
One mole of an idea l gas at a temperature T1K expands slowly according to the law Its final temperature is T2K . The work done by the gas is
PhysicsHeat
Physics
Initial volume of three samples of same gas A,B and C are same. The process A is adiabatic, B is isobaric and C is isothermal. Each of the sample has same final pressure and volume. The initial pressure of which sample was maximum.
Initial volume of three samples of same gas A,B and C are same. The process A is adiabatic, B is isobaric and C is isothermal. Each of the sample has same final pressure and volume. The initial pressure of which sample was maximum.
PhysicsHeat
Physics
In an adiabatic process . The pressure of the gas Will be proportional to :
In an adiabatic process . The pressure of the gas Will be proportional to :
PhysicsHeat