Physics
Grade-7
Easy

Question

Tungsten is used for the manufacture of an electric bulb because

  1. It is inexpensive
  2. It is malleable
  3. It is a good conductor
  4. It has a very high melting point

Hint:

It has a very high melting point

The correct answer is: It has a very high melting point


    Tungsten is used in due to high melting point and resistivity and does not oxidize. Thus, the filament of tungsten does not melt even though a large amount of heat is generated due to the passage of the current to through the filament.

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