# NEET Physics Waves Questions Solved

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A wave travelling in positive X-direction with A = 0.2 m has a velocity of 360 m/sec. if λ = 60 m, then correct expression for the wave is

(1) $y=0.2\mathrm{sin}\text{\hspace{0.17em}}\left[2\pi \left(6t+\frac{x}{60}\right)\right]$

(2) $y=0.2\mathrm{sin}\text{\hspace{0.17em}}\left[\pi \left(6t+\frac{x}{60}\right)\right]$

(3) $y=0.2\mathrm{sin}\text{\hspace{0.17em}}\left[2\pi \left(6t-\frac{x}{60}\right)\right]$

(4) $y=0.2\mathrm{sin}\text{\hspace{0.17em}}\left[\pi \left(6t-\frac{x}{60}\right)\right]$

(3) A wave travelling in positive x-direction may be represented as $y=A\mathrm{sin}\frac{2\pi }{\lambda }\text{\hspace{0.17em}}\left(v\text{\hspace{0.17em}}t-x\right)$. On putting values $y=0.2\mathrm{sin}\frac{2\pi }{60}\left(360\text{\hspace{0.17em}}t-x\right)$$y=0.2\mathrm{sin}2\pi \text{\hspace{0.17em}}\left(6\text{\hspace{0.17em}}t-\frac{x}{60}\right)$

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