Final answer:
The equation to solve for mass density of the string is rho = T/lambda.
The answer is option ⇒a
Step-by-step explanation:
To solve equation (1) for mass density of the string, we use the equation v = sqrt(T/lambda), where v is the velocity of the wave on the string, T is the tension in the string, and lambda is the linear density of the string.
Rearranging the equation, we get: rho = T/lambda.
Therefore, option a) rho = T/lambda is the correct equation to solve for mass density of the string.