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\(^{-1}\)

The angular wave number k = \(\frac{2π}{λ}\) expresses the number of radians in a unit of distance.