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Provost Theory of Exchange

The figure he...

Question

The figure here shows four paths on a p-V diagrams along which as gas can be taken from state i to state f. Rank the paths according to the magnitude of the energy transferred as heat Q between the gas and its environment, greatest first

1 > 2 > 3 > 4

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4 > 3 > 2 > 1

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1 = 2 = 3 = 4

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Solution

The correct option is B
4 > 3 > 2 > 1

In all of these four processes the change in internal energy is the same From first law we know that

$Q = Δ E_{i n t} + W .$

Hence the order of heat transferred into the system during the process will remain the same as the order of work done

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The figure here shows four paths on a p-V diagrams along which as gas can be taken from state i to state f. Rank the paths according to -

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Q. A given mass of a gas expands from the state A to the state B by three paths 1, 2 and 3 as shown in the figure. If

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The figure here shows four paths on a p-V diagrams along which as gas can be taken from state i to state f. Rank the paths according to the magnitude of the energy transferred as heat Q between the gas and its environment, greatest first

The correct option is B 4 > 3 > 2 > 1 In all of these four processes the change in internal energy is the same From first law we know that Q=ΔEint+W. Hence the order of heat transferred into the system during the process will remain the same as the order of work done

The correct option is B
4 > 3 > 2 > 1

In all of these four processes the change in internal energy is the same From first law we know that

$Q = Δ E_{i n t} + W .$

Hence the order of heat transferred into the system during the process will remain the same as the order of work done