Waves

JEE Main level, single correct, medium

46 of 142

Question 46 of 142

The displacement y of a particle in a medium can be expressed as y=10−6sin⁡(110t+20x+π/4)my=10^{-6} \sin (110 t+20 x+\pi / 4) m, where tt is in seconds and xx in meter. The speed of the wave is

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Answer: (B) 5 m/s5 \mathrm{~m} / \mathrm{s}

v=ωk=5 ms−1\mathrm{v}=\frac{\omega}{\mathrm{k}}=5 \mathrm{~ms}^{-1}

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