How to derive  speed = wavelength * frequency

Posted by Tanveer Singh (Jan 12, 2017 12:34 p.m.) (Question ID: 1307)

• As we know, speed= Distance travelled/Time taken

Suppose a wave travels a distance $\lambda$ which is its wavelength in time T,

$\lambda$ / T

Here T is the time taken by one wave. 1/T becomes the number of waves per second and is known as frequency of the wave.

Thus v = $\lambda$ x f

i.e. Speed = Wavelength x Frequency

Answered by Shweta Gulati (Jan 17, 2017 12:25 a.m.)
Thanks (0)

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