Question

give reasons why tuning forks are marked with specific frequencies like 256Hz, 512Hz, etc

Answer 1

fundamental frequency of tuning fork depends upon its dimensions and suppose here fundamental frequency is 256HZ it will then vibrate due to resonance which gives it specific frequency values

Answer 2

Answer: tuning fork are marked with specific frequencies like 256hz

512hz , etc. To produce a sound wave of single frequency which is called a monotone

Explanation: