Chapter 12, Problem 11STP

To determine

To choose the correct option: the light source which makes light my making a piece of metal hot enough to glow, among the options such as (A) fluorescent bulb (B) incandescent bulb (C) neon bulb (D) laser.

Answer to Problem 11STP

The correct option is (B).

Explanation of Solution

Introduction:

The light source which produces light by heating metal till it glows is incandescent bulb. Incandescent bulb or lamp is a source of light that works by incandescence that is emission of light produced by heating the filament. Incandescence means light produced by heating.

An incandescent bulb typically consists of a glass enclosure containing a tungsten filament. An electric current passes through a thin metal called filament, heating it to a temperature that produces light. Incandescent bulbs use a tungsten filament because of its high melting point.

Conclusion:

Hence, the correct answer is (B).