# NEET Physics Thermodynamics Questions Solved

When a system is taken from state i to a state f along path iaf, Q = 50 J and W = 20 J. Along path ibf, Q = 35 J. If W = –13 J for the curved return path f i, Q for this path is

(1) 33 J

(2) 23 J

(3) – 7 J

(4) – 43 J

(4) ΔU, remains same for both path

For path iaf : $\Delta U=\Delta Q-\Delta W=50-20=30J$.

For path $fi$ :

$\Delta Q=-\text{\hspace{0.17em}}30-13=-\text{\hspace{0.17em}}43\text{\hspace{0.17em}}J$.

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