(A): Two waves moving in a uniform string having uniform tension cannot have different velocities.
(R): Elastic and intertial properties of string are same for all waves in same string. Moreover speed of wave in a string depends on its elastic and inertial properties, pressure only.

Options

A. Both 'A' and 'R' are true and 'R' is the correct, explanation of 'A'.
B. Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'
C. A' is true and 'R' is false
D. Both 'A' and 'R' are false

Answer

D