What are the advantages of fluroscent lamps over incandescent lamps.

What are the advantages of using discharge lamps instead of incandescent lamps ?

What are the advantages of biofertilizers over chemical fertilizers? Give an example for biofertilizer.

Incandescent lamp, discharge lamp , C.F.L, LED lamp, arc lamp are given for observation . Answer the following questions after observing them. Which metal is used to make filament of an incandescent lamp ? What are the advantages of using this metal as a filament ?

Observe the diagram . Nichrome is not used as filament in incandescent lamps . Why ?

Suppose you have to replace an incandescent lamp at your house. Following lamps are available. Incandescent lamp, CFL, LED, Fluroscent lamp Which of these lamps would you select ?Justify your selection.

Write down the reasons for the following statements . Nichrome is not used as filament in incandescent lamp.