CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In a thermodynamic process, pressure of a fixed mass of gas is changed in such a manner that the gas releases 20 joule of heat and 8 joule of work was done on the gas. If the initial internal energy of the gas was 30 joule, then the final internal energy will be :

A
2joule
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
18joule
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
42joule
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
58joule
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 18joule
According to first law of thermodynamics ΔQ=ΔW+ΔU
Substituting values will give,
20=8+(Uf30)
Uf=18J

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
The First Law of Thermodynamics
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon