a) The ratio of 10 m to 10 km.
b) The percentage of 3:4 .
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31
Answer:
Huygens' principle, in optics, a statement that all points of a wave front of light in a vacuum or transparent medium may be regarded as new sources of wavelets that expand in every direction at a rate depending on their velocities.
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4
Answer:
(b) answer is 75%
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