A tuning fork of frequency 512 Hz produces 4 beats per second with another tuning fork. What are the

JAMB Physics 2023 86 views
Source: JAMB · 2023

A tuning fork of frequency 512 Hz produces 4 beats per second with another tuning fork. What are the possible frequencies of the second tuning fork?

  1. 508 Hz and 516 Hz ✓
  2. 510 Hz and 514 Hz
  3. 506 Hz and 518 Hz
  4. 504 Hz and 520 Hz
Explanation

The beat frequency is the difference between the two frequencies. The second fork can be 4 Hz higher or 4 Hz lower than 512 Hz.

512 − 4 = 508 Hz and 512 + 4 = 516 Hz. So the possible frequencies are 508 Hz and 516 Hz.

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