A sinusoidal wave of wavelength 7.5 cm travels a distance of 1.2… | JEE Main 2025 Physics PYQ

MCQEasyJEE Main 2025 · 2 April, Shift 2Wave Motion Basics

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

A
$y = 2 \cos(0.83x - 3.35t) \, \text{cm}$
B
$y = 2 \sin(0.83x - 3.5t) \, \text{cm}$
C
$y = 2 \cos(3.35x - 0.83t) \, \text{cm}$
D
$y = 2 \cos(0.13x - 0.5t) \, \text{cm}$

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