Blackbody Radiation Quiz

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Questions and Answers

What is a blackbody?

A blackbody is a body that completely absorbs radiations of all wavelengths incident on it.

What are blackbody radiations?

Blackbody radiations are radiations emitted by a blackbody when it is heated.

How can a cavity made out of a hollow container with a narrow opening and painted with lampblack approximate a blackbody?

When any radiation falls on the hole of the cavity, it enters the cavity, gets reflected by the wall, and eventually gets absorbed, providing a close approximation to a perfectly blackbody.

What does the emitted radiation from a blackbody spectrum contain?

<p>The emitted radiation from a blackbody spectrum contains radiation of all frequencies.</p> Signup and view all the answers

What does the intensity of emitted radiation, I(n), represent?

<p>The intensity of emitted radiation, I(n), represents the intensity of radiation between the frequencies n and n+dn.</p> Signup and view all the answers