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If a gas absorbs 200J of heat and expand...

If a gas absorbs `200J` of heat and expands by `500 cm^(3)` against a constant pressure of `2 xx 10^(5) N m^(-2)`, then the change in internal energy is

A

`1400 Wm^(2)`

B

`8.4 Wm^(-2)`

C

`140 Wm^(-2)`

D

`4.2 Wm^(-2)`

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The correct Answer is:
A
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