Question
Physics Question on work done thermodynamics
Arrange the four graphs in descending order of total work done; where W 1, W 2, W 3 and W 4 are the work done corresponding to figure a, b, c and d respectively.
A
W 3 > W 2 > W 1 > W 4
B
W 3 > W 2 > W 4 > W 1
C
W 2 > W 3 > W 4 > W 1
D
W 2 > W 3 > W 1 > W 4
Answer
W 3 > W 2 > W 1 > W 4
Explanation
Solution
The correct answer is (A) : W 3 > W 2 > W 1 > W 4
W a = 0, W b = +ve, W c = +ve > W b, W d = –ve
⇒ _W c _> _W b _> W a > W d
⇒ W 3 > W 2 > W 1 > W 4