Q. In the following figure, four curves A, B, C and D are shown. The curves are

A) Isothermal for A and D while adiabatic for B and C
B) Adiabatic for A and C while isothermal for B and D
C) Isothermal for A and B while adiabatic for C and D
D) Isothermal for A and C while adiabatic for B and D
Explanation

(d) The amount of work done in the isothermal cycle is higher than in the adiabatic cycle, because the area under the isothermal curve is larger than the area under the adiabatic curve. Hence, the curves are isothermal for A and C , while adiabatic for B and D.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

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