Answer
a) The speed of waves on string 1 is less than that of string 2
b) II
Work Step by Step
(a) We know that string 1 has a larger mass per unit length $\mu$ as compared to string 2. Since $v=\sqrt{\frac{F}{\mu}}$, this equation shows us that the speed of waves on string 1 is less than that of string 2.
(b) The correct option is statement (II) -- that is, a thick string implies a large mass per length and a slow wave speed.
