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Real Gases

The given fig...

Question

The given figure shows a change of state A to state C by two paths ABC and AC for an ideal gas. Calculate the:
Amount of heat supplied to the gas to go from A to B, if internal energy of gas at state B is 20 J.

A

2

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B

4

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C

5

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D

10

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Solution

The correct option is D $10$
For the path AB,
$q = Δ U - w (w = 0)$
$q = Δ U = U_{B} - U_{A} = 20 - 10 = 10 J$

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