What do these two changes have in common? shaking up salad dressing
picking up a paper clip with a magnet
Select all that apply.
Both are chemical changes.
Both are changes of state.
Both conserve mass.
Both result in a different tpe of matter than was
there before

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.