The equation of a progressive wave is given by y = 5 sin(100πt - 0.4πx) where y and x are in m and t is in s.
(1) The amplitude of the war e is 5 m.
(2) The wavelength of the wave is 5 m.
(3) The frequency of the wave is 50 Hz.
(4) The velocity of the wave is 250 m s-1
Which of the following statements are correct?
(a) (1), (2) and (3)
(b) (2) and (3)
(c) (1) and (4)
(d) All are correct
