What is the primary characteristic of a blackbody radiator at room temperature?

Blackbody Radiation and Quantum Energy

Interactive Video
•
Physics, Science, Mathematics
•
10th - 12th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It remains transparent.
It reflects all radiation.
It emits visible light.
It absorbs all radiation.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to a blackbody radiator as it is heated to 750 degrees Celsius?
It becomes transparent.
It remains black.
It starts to emit ultraviolet light.
It turns from black to dark red and then to bright red.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is a theoretical black body constructed in the video?
Using a transparent box with a hole.
Using a glass tube.
Using a box with a hole painted black inside.
Using a metal sphere.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between the intensity of light and energy?
Intensity is the energy per minute per area.
Intensity decreases as energy increases.
Intensity is the energy per second per area.
Intensity is unrelated to energy.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the 'ultraviolet catastrophe'?
The prediction that black bodies emit only visible light.
The prediction that black bodies emit only infrared light.
The prediction that black bodies emit excessive ultraviolet light.
The prediction that black bodies emit no light.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What did Planck propose to resolve the ultraviolet catastrophe?
Energy levels are quantized.
Energy levels are continuous.
Energy levels are infinite.
Energy levels are random.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Planck, what is energy proportional to?
The temperature of the black body.
An integer times Planck's constant times frequency.
The speed of light.
The square of the frequency.
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