Direction: Encircle the letter of correct answer.
12. With reference to wave,what is a disturbance?
A. It refers to the resistance produced by some particles of a material
B. It refers to an oscillation produced by some energy that creates a wave
C. It refers to the wavelength of the wave
D. It refers to the speed of the wave
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Answers & Comments
Answer:
12.D
13.B
14.C
15.A
16.A
17.D
18.C