A) 1904 J
B) 2072 J
C) 2240 J
D) 2408 J
Correct Answer: B
Solution :
From first law of thermodynamics, we have \[\Delta U=Q-W\] which states that, if an amount of heat Q is given to a system, a part of it will be used in increasing the internal energy \[(\Delta U)\] of the system and the rest in doing work (W). \[\therefore \] We have, \[Q=ML=1\times 2240\,J\] and \[W=168\,J\] \[\therefore \] \[\Delta U=2240-168\] \[=2072\,J\]You need to login to perform this action.
You will be redirected in
3 sec