A standing wave is formed by the superposition of two waves travelling in opposite directions. The transverse displacement is given by y(x,t)=0.5\text{\sin}({5\pi}/4x)\text{\cos}(200 \pit). What is the speed of the travelling wave moving in the positive x direction ? (x and t are in meter and second,respectively.) [Main 9 April 2017]

JEE Main 9 April 2017 Paper Solved Paper

Section: Physics

Question : 13 of 90

Marks: +1, -0

A standing wave is formed by the superposition of two waves travelling in opposite directions. The transverse displacement is given by
y(x,t)=0.5sin(

5π

x)cos(200πt).
What is the speed of the travelling wave moving in the positive x direction ?
(x and t are in meter and second,respectively.)

[Main 9 April 2017]

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