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500 joule of heat was supplied to a syst...

500 joule of heat was supplied to a system at constant volume. It resulted in the increase of temperature of the system from `20^(@)C` to `25^(@)C`. What is the change in internal energy of the system ?

Text Solution

Verified by Experts

The correct Answer is:
`DeltaU = 500 J`
At constant volume, `DeltaV=0`. Applying `DeltaU= q+w=q+PDeltaV, ` we get `DeltaU = q= 500J`.
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Knowledge Check

  • 200 joules of heat was supplied to a system at constant volume. It resulted in the increase in temperature of the system from 298 to 323 K. What is the change in internal energy of the system ?

    A
    400 J
    B
    200 J
    C
    50 J
    D
    150 J

  • In the above example , if the system moves from Bto A, what is the Change in internal energy ?

    A
    `300 J`
    B
    `-300 J`
    C
    `400 J`
    D
    `-400 J`

  • A system absorbs 50 kJ heat and does 20 kJ of work. What is the net change in the internal energy of the system ?

    A
    Increase by 30 kJ
    B
    Decrease by 30 kJ
    C
    Increase by 70 kJ
    D
    Decrease by 70 kJ