Why does the frequency of a tuning fork remains constant?

The frequency of a tuning fork remains constant because it is determined by the physical properties of the fork, specifically its material, shape, and size. When struck, the tuning fork vibrates at its natural frequency, which is a fixed characteristic based on these properties. Since the fork's structure does not change during typical use, the frequency of the sound waves it produces remains stable. This makes Tuning Forks reliable tools for pitch reference in musical contexts.