NCERT · Class 11 · Physics · WavesWhen two sound waves of slightly different frequencies $f1$ and $f2$ superimpose, the beat frequency produced per second is:
Step-by-Step Solution
Correct Option: $|f_1 - f_2|$ \nBeat frequency is the absolute difference between the frequencies of two superimposing sound waves, given by $f_{beat} = |f_1 - f_2|$.
Detailed Options Breakdown
Option : $f_1 + f_2$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Waves.
Option 1: $|f_1 - f_2|$ (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: $\frac{f_1 + f_2}{2}$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Waves.
Option 3: $f_1 \times f_2$
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Waves.
💡 Study Guide: This question tests core syllabus concepts from Waves. For formulas, key summaries, and mock exam reference guides, read the full Waves Revision Notes.