A string with linear mass density μ1=2.0×10−3kg⋅m−1 is tied to a second string with μ2=8.0×10−3kg⋅m−1. The tension in both sections is 50N. A downward pulse travels along the lighter string toward the junction. Which statement correctly describes the orientation of the reflected pulse?
(a) It is upright because the pulse moves into a slower medium.
(b) It is inverted because the pulse moves into a faster medium.
(c) It is inverted because the pulse moves into a slower medium.
(d) It is upright because the junction behaves like a free end.