A wave pulse, travelling on a two -piece string, gets partially reflected and partially transmitted at the junction. The reflected wave is inverted in shape as compared to the incident one. If the incident wave has wavelength λ and the transmitted wave λ
(a) λ` >λ
(b) λ` = λ
(c) λ` < λ
(d) nothing can be said about the relation of λ and λ`.