A wave travelling along the x -axis is described by the equation y(x, t)=0.005 cos (α x - β t). If the wavelength and the time period of the wave are 0.08 m and 2.0s, respectively, then α and β in appropriate units are

(B) α = 0.08/(π), β = 2.0/(π)

(C) α = 0.04/(π), β = 1.0/(π)

(D) α = 12.50π, β = (π)/2.0

Oscillations and Waves: JEE Main 2008 Physics question

JEE Main 2008 · Annual, Paper 1 · Q8478

JEE Main 2008Annual, Paper 1PhysicsMediumOscillations and Waves185× since 2002

A wave travelling along the

x

-axis is described by the equation

y(x, t)=0.005

\cos \,\left( {\alpha \,x - \beta t} \right).

If the wavelength and the time period of the wave are

0.08

m

and

2.0s

, respectively, then

\alpha

and

\beta

in appropriate units are

JEE Main 2008 Oscillations and Waves Question with Solution (Annual Paper 1, Q8478) | JEE Arc