Vibrational amplitudes of bonds are increased. True Intra-molecular bond angles are changed. False Bonds absorbing IR radiation do so without changing their dipole moment. True Relative electron spins are changed. False Ordinarily we sense most IR frequencies as colors in the region we call yellow.

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.