A)
always remember
if in question you have P-V diagram then
work done = area under curve
in this case to find the total area we need to calculate the area of the given rectangle
that is 4-1-2-3-4
so the area of a rectangle = length*width = 6 L * 4 atm
now convert these units into S.I unit
1 atm =101325 pascals
1 L = 10^-3 m3
so
work = 6*10^-3*4*101325 = 2431.8 J answer for A
B)
- 2431.8 J answer for B
in this casework will be negative but same magnitude
positive in case of the clockwise cycle and negative in case of anti-clockwise cycle
D)
W3423 = area of a trainagle
= 1/2*base *height = 1/2*6*10^-3*4*101325 =1215.9 J answer
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