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Which of the following surfaces is the best emitter of thermal radiation?
Which of the following surfaces is the best emitter of thermal radiation?
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Practice Questions
1 question
Q1
Which of the following surfaces is the best emitter of thermal radiation?
Shiny metal
White paint
Black paint
Glass
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A black surface is the best emitter of thermal radiation due to its high emissivity.
Questions & Step-by-step Solutions
1 item
Q
Q: Which of the following surfaces is the best emitter of thermal radiation?
Solution:
A black surface is the best emitter of thermal radiation due to its high emissivity.
Steps: 5
Show Steps
Step 1: Understand what thermal radiation is. It is the energy emitted by a surface in the form of heat.
Step 2: Learn about emissivity. Emissivity is a measure of how well a surface emits thermal radiation compared to a perfect black body.
Step 3: Know that a black surface has the highest emissivity, meaning it is the best at emitting thermal radiation.
Step 4: Compare different surfaces. Surfaces that are darker and more matte tend to emit more thermal radiation than shiny or light-colored surfaces.
Step 5: Conclude that a black surface is the best emitter of thermal radiation.
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