Q: What is the size of an object compared to the wavelength of the propagating wave when reflection occurs?

A Small
B Same
C Very small
D Large

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Answer: D

Explanation:

Reflection occurs when a propagating electromagnetic wave impinges upon an object which has very large dimensions when compared to the wavelength of the propagation wave. Reflection occurs from the surface of the Earth and from buildings and walls. Large objects such as mountains and buildings reflect signals, while smaller objects such as trees and bushes scatter them.

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Q: What is the size of an object compared to the wavelength of the propagating wave when reflection occurs?

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