Which one of the following relations correctly expresses the speed of a wave in terms…

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

Which one of the following relations correctly expresses the speed

v

of a wave in terms of its wavelength

\lambda

and frequency

f

? (a)

v = \dfrac{\lambda f}{2}

(b)

v = 2\pi \lambda f

(c)

v = \lambda f

(d)

v = \dfrac{\lambda f}{2\pi}