Question

Question 3

In an electric bulb, light is produced due to the glowing of

(a) the glass case of the bulb.

(b) the thin filament.

(c) the thick wires supporting the filament.

(d) gases inside the glass case of the bulb.

Answer 1

Option (b) is the correct answer.

The thin filament inside the bulb is a metal strip, having high melting point. When the electric current is passed through this wire due to the heat produced in the filament, it becomes red hot and produces light.