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If heat is supplied to an ideal gas in an isothermal process, a) the internal energy of the gas will increase b) the gas will do positive work c) the gas will do negative work d) the said process is not possible.

If heat is supplied to an ideal gas in an isothermal process,
a) the internal energy of the gas will increase
b) the gas will do positive work
c) the gas will do negative work
d) the said process is not possible.

Grade:10

2 Answers

Kevin Nash
askIITians Faculty 332 Points
7 years ago
Sol. Yes, the internal energy must increase when temp. increases; as internal energy depends upon temperature U ∝ T
Kabir Jain
11 Points
2 years ago
the ans is that the gas will do positive work. according to us it will be negative.
the work will be done because the energy, in form of heat, supplied will not change the temperature (being isothermal), so the energy needs to be cancelled out. therefore gas will do the required work. for us, it is negative, by convention, but it is positive for the gas.

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