Question
The equation of a wave travelling in a string can be written as $y=3 \cos \pi(100 t-x)$ Its wavelength is [MP PMT 1991, 94, 97; MNR 1985](a) $100 \mathrm{~cm}$(b) $2 \mathrm{~cm}$(c) $5 \mathrm{~cm}$(d) None of these
Step 1
We can write this in the standard form of a wave equation which is $y=A \cos(\omega t - kx)$, where $A$ is the amplitude, $\omega$ is the angular frequency, $k$ is the wave number, and $x$ is the displacement. Show more…
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