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1. Which pair of EM waves is commonly used for communication?
A. X-rays and infrared
C. radio waves and gamma rays
B. radio waves and microwaves
D. infrared and microwaves​

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Answer:

1. Which pair of EM waves is commonly used for communication?

A. X-rays and infrared

C. radio waves and gamma rays

B. radio waves and microwaves

D. infrared and microwaves

Explanation:

1.c

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