Question

Which metal is used to make the filament of an incandescent lamp? How the vaporisation can be reduced?​

Answer 1

Answer:

Tungsten

Tungsten is the most preferred for incandescent lamps due to its high melting point (above 3650 K), and it can be operated at high temperature inside a bulb containing air under reduced pressure, or an inert gas in order to avoid quick oxidation of the filament.

Answer 2

. Tungsten is the metal used to make the filament of an incandescent lamp.

. To reduce evaporation from land surface it is a common practice to spread mulch on the land surface. It restricts air movement, maintains high water vapour pressure near the soil surface and shields the soil from the solar energy and as a result of all these factors reduces evaporation.