Two graphs of the same harmonic wave are shown below. The graph (1) on the left shows the displacement of wave y, as a function of position x for a given instant of time. The graph ( 2 ) on the right shows the displacement of wave as a function of time 't' for a given position. The speed of the wave is
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a
5.0 cm s−1
b
0.5 cm s−1
c
0.4 cm s−1
d
4.0 cm s−1
answer is A.
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Detailed Solution
From graph (1), Wavelength (λ)=4 cmFrom graph (2), Time period (T) = 0.8 sv=fλ=λ/T=4/0.8=5 cm s−1