An investigation involves determining which metal is better for making pots that will cook food faster. Which is the best hypothesis to use for this investigation?
Copper is better than iron for making pots.
Copper is more malleable and heats up faster than iron.
If copper is a better conductor, it will heat up faster than iron.
If copper heats up faster than iron, it is better for making pots

c

explanation:

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.