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A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a...

Physics
JAMB 2023

A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a wave speed of 20 \(ms-1\)

Calculate the wave number of the wave.

  • A. 3
  • B. 4
  • C. 5
  • D. 2
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Correct Answer: Option C
Explanation

A=0.8m; f=16Hz; v=20 \(ms^-1\); k=?

v = fλ

λ =1.25m


= k= \(\frac{2π}{λ}\) =\(\frac{2 × 3.142}{1.25}\)
 
 k=  5m ( to 1 s.f)

 

There is an explanation video available below.


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Explanation Video

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