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Q. |
When a light wave is reflected from a mirror, there is a change in its – |
A. | frequency |
B. | amplitude |
C. | wavelength |
D. | velocity |
Answer» B. amplitude | |
Explanation: When a light wave is reflected from an object, it changes not only its amplitude but also its phase according to the properties of the object at a particular point. The velocity and momentum are just reversed in another direction. |
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