what increases the solubility rate in the dissolving process of the solid solute in a liquid solvent?

Henry's law states that, at a given temperature, the solubility of a gas in a liquid is proportional to the partial pressure of the gas above the liquid. Increasing the surface area increases the rate of solubility of a solid because a larger number of molecules have contact with the solvent.

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.