Q. Work done is positive when

किया गया कार्य सकारात्मक होता है जब

A
Gas is compressed
गैस संपीड़ित है
B
Gas is cooled
गैस को ठंडा किया जाता है
C
Gas expands
गैस फैलती है
D
Temperature falls
तापमान गिरता है

Explanation

When a gas expands, it pushes against external pressure, doing work on the surroundings. Thus, work done by the gas is positive.

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