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A container is closed by a movable pisto...

A container is closed by a movable piston. We supply heat to gas inside container. Due to heating, piston is displaced by 5 cm. cross section area of cylinder is 40 `cm^(2)` and heat supplied to gas is 40 joules. The change in internal energy is

A

a. 20 J

B

b. `-20J`

C

c. `0J`

D

d. `+40J`

Text Solution

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The correct Answer is:
A
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