NEET Physics Beats MCQ Question
A diagram shows two harmonic waves of frequencies 11 Hz and 9 Hz combining to form a resultant wave. Which label correctly identifies the beat frequency produced by this combination?
2 Hz
20 Hz
9 Hz
1 Hz
Correct Answer
Detailed Explanation
The beat frequency is calculated as the difference between the two frequencies: ν_beat = ν_1 - ν_2 = 11 Hz - 9 Hz = 2 Hz, as shown in the NCERT context.
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