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JAMB Physics 2022 Paper

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Question : 3

Total: 40

Consider the wave equation y = 5mm sin [1cm

^{-1}

^{-1}

t]. The wave number is?

0.1 cm $^{-1}$
10cm $^{-1}$
1.0cm $^{-1}$
2cm $^{-1}$

Solution:

The angular wave number k = $\frac{2\pi}{\lambda}$ expresses the number of radians in a unit of distance.

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