Consider the wave equation y 5mm sin 1cm -1 x -... - JAMB Physics 2022 Question
Consider the wave equation y = 5mm sin [1cm\(^{-1}\)x - 60s\(^{-1}\)t]. The wave number is?
A
0.1 cm\(^{-1}\)
B
10cm\(^{-1}\)
C
1.0cm\(^{-1}\)
D
2cm\(^{-1}\)
correct option: c
The angular wave number k is used to express the number of radians in a unit of distance.
Angular wave number is inversely proportional to the wavelength; hence the formula: k = 2π/λ.
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