JAMB - Physics (2022 - No. 3)
Consider the wave equation y = 5mm sin [1cm\(^{-1}\)x - 60s\(^{-1}\)t]. The wave number is?
0.1 cm\(^{-1}\)
10cm\(^{-1}\)
1.0cm\(^{-1}\)
2cm\(^{-1}\)
Uitleg
The angular wave number k = \(\frac{2π}{λ}\) expresses the number of radians in a unit of distance.