STANDARD Physics Wave Equation MCQ Question
A wave travelling along the x-axis is described by the equation y(x, t) = 0.005 sin(αx - βt). If the wavelength and time period of the wave are 0.08 m and 2s respectively, then α, β in appropriate units are:
α = 25π, β = π
α = 0.08π, β = 2/π
α = 0.04/π, β = 1/π
α = 12.5π, β = π/2
Correct Answer
Detailed Explanation
The wave number α = 2π/λ = 2π/0.08 = 25π. The angular frequency β = 2π/T = 2π/2 = π.
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