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The internal energy of an ideal diatomic gas decreases by the same amount as the work done by the system 

(i) the process must be adiabatic 

(ii) the temperature must decrease 

(iii) the process must be isobaric 

(iv) the process must be isothermal 

Which option satisfies the statements? 

(a) (i), (iv) 

(b) (ii), (iii) 

(c) (i), (ii) 

(d) All statements are correct

1 Answer

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Answer is (c) (i), (ii)

Adiabatic process \(\delta W=-\,\delta U\)

dU = nCvdT

dU decrease, thenT decrease.

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