The region of the electromagnetic spectrum with frequencies just less than those in the visible region is the ______________ region.
A) infrared
B) gamma rays
C) radio waves
D) microwaves
E) x-rays
Correct Answer:
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Q21: Electromagnetic waves are
A) longitudinal.
B) reverse.
C) transverse.
D) a
Q22: A sound with a frequency of 25
Q23: A radar pulse returns 9.0 × 10-4
Q24: An increase of 20 dB increases the
Q25: Light waves travel fastest in
A) water.
B) glass.
C)
Q27: Which of the following sound frequencies lie(s)
Q28: Which of the following sound frequencies lie(s)
Q29: The region of the electromagnetic spectrum with
Q30: Which of the following electromagnetic radiations has
Q31: The region of the electromagnetic spectrum with
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