A monoatomic gas of n-moles is heated from temperature T1 to T2 under two different conditions (i) at constant volume and (ii) at constant pressure. The change in internal energy of the gas is :
A
More for (i)
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B
More for (ii)
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C
Same in both cases
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D
Independent of number of moles
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Solution
The correct option is C Same in both cases Change in internal energy will be △U=nCv△T for both process (at constant volume and constant pressure). It doesn't depend upon type of process. It is a state function, so change in temperature is same in both cases hence △U is same in both.