Question

Select One Option Correct from the following : A wave is represented by the equation: $y = A \sin (10 \pi x + 15\pi t + \pi/3),$, where x is in metre and t is in second. The expression represents
(A)a wave travelling in positive x direction with a velocity 1.5 m/s.
(B)a wave travelling in negative x direction with a velocity 1.5 m/s.
(C)a wave travelling in negative x direction with a wavelength 0.2 m.
(D)a wave travelling in positive x direction with a wavelength 0.2 m.

Answer 1

d option is correct I think