A wave has a frequency of 5 GHz . What is the period of the wave?
A.
200 ps
B.
2 ns
C.
20 ns
D.
\(20000 \mu \mathrm{~s}\)
Exam No：9702_w24_qp_11 Year：2024 Question No：26
Answer:
A
Knowledge points:
7.1.1 describe what is meant by wave motion as illustrated by vibration in ropes, springs and ripple tanks
7.1.2 understand and use the terms displacement, amplitude, phase difference, period, frequency, wavelength and speed
7.1.3 deduce, from the definitions of speed, frequency and wavelength, the wave equation v = fm d) recall and use the equation v = fm
7.1.4 recall and use the equation v = fm
7.1.5 recall and use the relationship intensity ∝ (amplitude)2
Solution:
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