Equation of a wave propagating on a string is y =3 cos {pi (100 t - x)}(Where x is in cm and t is in s). Find its wavelength.

Equation of a wave propagating on a string is y =3 cos {pi (100 t - x)

1.	Equation of a wave propagating on a string is y =3 cos {pi (100 t - x)}(Where x is in cm and t is in s). Find its wavelength.
Answer» 100 CM 2 cm 5 cm None of these Solution :Here `y = COS (100 pi t - pi x)` COMPARING with `y = a cos (OMEGA t - kx) ` we get, `k = pi implies (2pi)/(lamda) = pi implies lamda = 2 cm`