A system suffers an increase in internal energy of 102 J and at the same time the has in the system is compressed from 517 ml to 276 ml by a constant external pressure of 3.9 atm. what is the heat change of the system

um i think it might be a car?

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.