Physics Review Question

Unit: waves
Year: 1991 Question#: 51
Question: Which is a characteristic of light produced by a monochromatic light source?
(1 ) It can be dispersed by a prism.
(2 ) It is a longitudinal wave.
(3 ) Its frequency is constantly changing.
(4 ) It can be polarized.

What is this question really asking?


Explanation by: Gabriel F
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Answer 1
A) It can be dispersed by a prism.


INCORRECT

This answer is wrong because monochromatic light cannot be dispersed into its component colors because it is only one color. return to top























Answer 2
2)It is a longitudinal wave.

All light is transverse waves, none are longitudinal waves.
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Answer 3
3) Its frequency is constantly changing.

INCORRECT

Because monochromatic light does not switch colors so the frequency cannot change. return to top


























Answer 4
4)It can be polarized.

CORRECT

You can filter it out by its orientation.
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What's this question really asking?

What is true of monochromatic (one-color) light? return to top

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