1
Question
If the internal energy of a system decreases by 128 J and at the same time it absorbs 56 J of heat, then:
If the internal energy of a system decreases by 128 J and at the same time it absorbs 56 J of heat, then:
Open in App
Solution
The correct option is B work done on the system is equal to −184 J
We know from first law of thermodynamics,
△U=q+W
Internal energy decreases by 128 J
Thus, △U=−128 J
Heat is absorbed, q=+56 J
Putting values in the above equation we get,
W=△U−q=(−128−56) J=−184 J
We know from first law of thermodynamics,
△U=q+W
Internal energy decreases by 128 J
Thus, △U=−128 J
Heat is absorbed, q=+56 J
Putting values in the above equation we get,
W=△U−q=(−128−56) J=−184 J
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
