When the brakes are applied in a moving car, the car's kinetic energy O A. transforms back into chemical potential energy.
O B. transforms into heat due to friction in the brake pads and with the road.
O c. remains the same, but the car's potential energy increases.
OD. increases until the car comes to a stop.

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.

hypostyle hall;