Which of the following surfaces is the best emitter of radiation?
Practice Questions
Q1
Which of the following surfaces is the best emitter of radiation?
Shiny surface
Dull black surface
White surface
Transparent surface
Questions & Step-by-Step Solutions
Which of the following surfaces is the best emitter of radiation?
Step 1: Understand what 'emitter of radiation' means. It refers to how well a surface can give off heat in the form of infrared radiation.
Step 2: Learn about Kirchhoff's law of thermal radiation. This law states that good emitters of radiation are also good absorbers.
Step 3: Identify the characteristics of surfaces. Dull black surfaces are known to absorb and emit radiation better than shiny or light-colored surfaces.
Step 4: Conclude that a dull black surface is the best emitter of radiation because it absorbs and emits heat effectively.
