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The temperature of 1 mole helium gas is ...

The temperature of `1` mole helium gas is increased by `1^@C`. Find the increase in internal energy.

A

7 cal

B

5 cal

C

3.5 cal

D

3 cal

Text Solution

Verified by Experts

The correct Answer is:
D
`((DeltaE)/(DeltaT))_(V)=C_(v)`
`:. Delta E =C_(v) DeltaT`
For a monoatomic gas,
Here, `Delta T =1`
`:. Delta E =3//2 R xx 1`
`=3//2 xx2 cal =3 cal`
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