Question

Work done by an ideal gas in a cyclic process which can be represented as a
clockwise cycle on a P-V graph is
Positive
Negative
Zero
Either (2) or (3)​

Answer 1

Answer:

Work done by a gas is given by W=∫PdV

With basic calculus we see that for a closed (cyclic) loop, a clock wise path gives positive work = Area of the loop. An anti clockwise loop gives negative work, whose magnitude is the area of the loop.

Here we have one positive loop and one negative. The positive loop has a larger area than the negative loop. Hence the net work for the cycle is positive.