Temperature of onemole of helium gas is increased by 1^(@)C. Hence,the increasein its internal energy will be

Temperature of onemole of helium gas is increased by 1^(@)C. Hence,the

1.	Temperature of onemole of helium gas is increased by 1^(@)C. Hence,the increasein its internal energy will be
Answer» 2 CAL 3 cal 4 cal 5 cal Solution :`C_(v) = ((DeltaU)/(DeltaT))_(V)`or` DeltaU = C_(v)DeltaT` But for MONOATOMIC GAS, `C_(v)= (3)/(2) R`. Also `DeltaT =1^(@)` (Given) Hence, `DeltaU = C_(v)DeltaT = (3)/(2) R = (3)/(2) xx2 = 3 cal`