What is the main characteristic of a black body in terms of radiation? (2019)

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Question: What is the main characteristic of a black body in terms of radiation? (2019)

Options:

Correct Answer: Absorbs all radiation

Exam Year: 2019

Solution:

A black body absorbs all radiation incident on it, making it an ideal emitter of thermal radiation.

What is the main characteristic of a black body in terms of radiation? (2019)

What is the main characteristic of a black body in terms of radiation? (2019)

Step 1: Understand what a black body is. A black body is an idealized object that perfectly absorbs all types of radiation that hits it.
Step 2: Know that because it absorbs all radiation, it does not reflect or transmit any light or heat.
Step 3: Realize that a black body is also an ideal emitter of thermal radiation. This means it can emit radiation very efficiently when it is heated.
Step 4: Remember that the main characteristic of a black body is its ability to absorb all incident radiation and emit thermal radiation perfectly.

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