Question

The equation y = 0.15 sin 5x cos 300t represents a stationary
wave. The wavelength of this stationary wave will be
(A) zero
(B) 1.256 m​

Answer 1

Explanation:

Wavelength λ=2π/k , k is the wave number. Comparing the given equation to the standard wave equation y=Asin(kx+ωt), k=5m

−1

λ=2π/5=1.256m