Physics-Isothermal & Adiabatic Processes
NEET Physics Isothermal & Adiabatic Processes MCQ Question
Type: MCQ-numerical-Medium-Class 11
For an adiabatic expansion of an ideal gas, if the initial internal energy is 500 J and the work done on the system is -200 J, what is the final internal energy of the system?
A
300 J
B
500 J
C
700 J
D
200 J
Correct Answer
Option A
Detailed Explanation
In an adiabatic process, the change in internal energy (∆U) is equal to the work done on the system (w) since q = 0. Thus, ∆U = w = -200 J. Therefore, the final internal energy is U_final = U_initial + ∆U = 500 J + (-200 J) = 300 J.
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