Physics · Principle of superposition of waves, reflection of waves, standing waves in strings and organ pipes, fundamental mode and harmonics, beats
If a note of unknown frequency produces 8 beats/sec, with a source of and 12 bea
If a note \( x \) of unknown frequency produces 8 beats/sec, with a source of \( 250 \mathrm{Hz} \) and 12 beats/sec with a source of \( 270 \mathrm{Hz} \), the frequency of unknown source will be:
- A. 258 \( \mathrm{Hz} \)
- B. 242 на
- C. 262 н
- D. 282 нz
Step-by-step solution
Beats frequency is absolute difference. From first source: |f - 250| = 8 → f=258 or 242. From second: |f - 270| = 12 → f=258 or 282. Common frequency is 258 Hz.