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One mole of a diatomic ideal gas undergo...

One mole of a diatomic ideal gas undergoes a cyclic process ABC as shown in figure. The process BC is adiabatic. The temperature at A,B and C are 400K, 800K and 600K respectively. Choose the correct statement:

A

The change in internal energy in whole cyclic process is 250R.

B

The change in internal process CA is 700R.

C

The change in internal energy in the process AB is -350R.

D

The chang in internal energy in the process BC is -500R.

Text Solution

Verified by Experts

The correct Answer is:
D
(d) In cyclic process, change in total internal energy is
zero.
`DeltaU_(cyclic)=0`
`DeltaU_(BC)=nC_vDeltaT=1xx(5R)/2DeltaT`
Where, `C_V` =molar specific heat at constant volume.
For BC, `DeltaT=-200K`
`:. DeltaU_(BC)=-500R`
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Knowledge Check

  • One mole of ideal gas undergoes a cyclic process ACBA as shown in figure. Process AC is adiabatic. The temperatures at 1, B and C are 300 K,600 K and 450 K respectively. Choose the correct statement.

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