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Travelling Waves MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

Quick Facts

  • General equation of travelling is considered one of the most asked concept.

  • 26 Questions around this concept.

Solve by difficulty

The displacement y of a particle in a medium can be expressed as:

y=10^{-6}\sin \left ( 100t +20x+\pi /4 \right )m where t is in second and x in meter. The speed of the wave is:

Concepts Covered - 1

General equation of travelling

The function f(t) represents the displacements y of the particle at x=0 as a function of time y(x,t)=f(t). The disturbance travels on the strings towards rthe ight with a constant speed of 'v'. Thus, the displacement produced at the left end at time 't', reaches the point 'x' at time 't+x/v'.

y=sin(2πxT)


There's a good reason for the factor of 2π. Looking at this expression, we can see that, when x ' increases by λ, the argument of the sine function increases by 2π, so the sine function goes through one complete cycle. Let's now write the equation in terms of the stationary coordinate x, where x=xvt :

y=sin(2π(xvt)λ)
 

 

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General equation of travelling

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