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CGP EDU Academic Team
Published on: September 12, 2026
The equation of a travelling wave is given by $y = 0.5 \sin(20x - 400t)$ where x and y are in meter and t is in second. The velocity of the wave is
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Verified by ExpertsThe correct answer is:
B
Given, $y = 0.5 \sin(20x - 400t)$
Comparing with $y = a \sin(\omega t - kx)$
Gives velocity of wave $v = \frac{\omega}{k} = \frac{400}{20} = 20 \mathrm{m} / \mathrm{s}.$
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