A sinusoidal wave of wavelength 7.5 cm travels a distance of 1.2 cm along the x-direction in 0.3 sec. The crest $P$ is at $x=0$ at $t=0 \mathrm{~sec}$ and maximum displacement of the wave is 2 cm. Which equation correctly represents this wave?

$y=2 \sin (0.83 x-3.5 t) \mathrm{cm}$

$y=2 \cos (3.35 x-0.83 t) \mathrm{cm}$

$y=2 \cos (0.13 x-0.5 t) \mathrm{cm}$

NEET UG PHYSICS MCQ: WAVES

1 Hard

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Application +4 | -1

A sinusoidal wave of wavelength 7.5 cm travels a distance of 1.2 cm along the x-direction in 0.3 sec. The crest

P

is at

x=0

t=0 \mathrm{~sec}

and maximum displacement of the wave is 2 cm. Which equation correctly represents this wave?

View answer and explanation

Correct option: A

y=2 \cos (0.83 x-3.35 t) \mathrm{cm}

Option A (

\frac{\pi }{2}

) is correct because the phase difference between

\sin(\theta)

and

\cos(\theta)

\frac{\pi}{2}

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