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Question

What is the frequency of a wave if 3 waves are produced in half second?
$8 H z$
$9 H z$
$5 H z$
$6 H z$

A

9 H z

B

5 H z

C

6 H z

D

8 H z

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Solution

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Frequency is the time taken per wave.
Thus, frequency = number of wave/time taken $= \frac{3}{1 / 2} = 6$ Hz

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