STATEMENT-I:In SHM let x be the maximum speed, y the frequency of...

- Statement I: In SHM, the expression (\frac{x y}{z}), where $x$ is the maximum speed, $y$ is the frequency, and $z$ is the maximum acceleration, is a constant quantity. This is true. In SHM, there is a relationship between maximum speed ($x$), maximum acceleration ($z$), and frequency ($y$), and their ratio leads to a constant dimensionless quantity. - Statement II: The reason (\frac{x y}{z}) is constant is that it forms a dimensionless quantity. This is true, as dividing quantities with appropriate dimensions can result in a dimensionless constant. Since both statements are true, and Statement II provides a valid reason for Statement I, the correct answer is (1).