PLEASE HELP Which of the following statements is true?

1. On a smooth surface, light rays bounce
off at different angles.

2. Reflection is the bouncing of light
waves off a surface.

3. We can see objects because the light is
reflected from our eyes to them.

4. When light rays travel and hit a flat
surface, the light is always absorbed.​

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.