Solution for thermo conceptual question

Solution of PART 1
1. (a)
There was no restriction for it expansion.So no tensile or compressive force developed.Longitudinal strains happens only when tensile or compressive force developed in the rod.So answer a

2.(c)
3.(d)
4.(c)
5. (a),(b)
6.(b)
7.(a),(c)
Due to thermal expansion,the diameter of the disc as well of the hole will increase.therefore the moment of inertia will increase resulting in a increase in the angular speed.

Solution of PART 2
1 (c)
2. (b)
3. (b)
4.(c)
5. (a),(c)

Solution of PART 3
1. (a)
dU=dQ-dW or dU=dQ as dQ is negative & dW=o
so dU is negative .dU <0 now dU =nCvdT
so nCvdT <0 or dT<0
2.(d)
3.(c) as dW=pdV so if dW> 0 the dV >0
4. (b),(c) as temperature is constant.
5. (a)
6. (a),(b)
7. (a),(b),(d)
8. (c)
9.(a),(c)
10. (a),(b)


Solution of PART 4
1. (d)
2. (c)
3. (b)
4. (a)
5. (d)
6. (d)
7. (a),(b)
8.(d)


More detailed solution for each question will be given later on

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