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For formation of beats, two sound notes must have
- a)different amplitudes and different frequencies
- b)exactly equal frequencies only
- c)exactly equal amplitudes only
- d)nearly equal frequencies and equal amplitudes
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
For formation of beats, two sound notes must havea)different amplitud...
In a sound note, various frequencies are mixed, hence beats can be produced by two sound notes only when they have nearly equal frequencies and equal amplitudes.
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For formation of beats, two sound notes must havea)different amplitud...
Formation of Beats
In order for beats to be formed, two sound notes must meet certain criteria. These criteria are explained below.
Nearly Equal Frequencies
The two sound notes must have nearly equal frequencies. If the frequencies are too different, no beats will be formed. The frequency difference between the two notes should be small enough that the listener can hear a fluctuation in the sound.
Equal Amplitudes
The two sound notes must also have equal amplitudes. If the amplitudes are different, the beats will not be heard clearly. The amplitudes should be equal to ensure that the listener can hear the beats distinctly.
Explanation of Correct Answer
The correct answer to the question is option 'D', which states that beats are formed when the two sound notes have nearly equal frequencies and equal amplitudes. This is because the formation of beats depends on the interaction between the two sound waves.
When two sound waves with nearly equal frequencies and equal amplitudes interact, they create a pattern of constructive and destructive interference. This pattern causes the amplitude of the resulting sound wave to fluctuate, creating the beats that can be heard by the listener.
Therefore, if the two sound notes have exactly equal frequencies or exactly equal amplitudes, no beats will be formed. It is the slight difference in frequency and the equality of amplitude that allows for the formation of beats.
Conclusion
In conclusion, the formation of beats depends on the interaction between two sound waves. For beats to be formed, the two sound notes must have nearly equal frequencies and equal amplitudes. This interaction creates a pattern of constructive and destructive interference, resulting in the fluctuation of the amplitude of the resulting sound wave.
In order for beats to be formed, two sound notes must meet certain criteria. These criteria are explained below.
Nearly Equal Frequencies
The two sound notes must have nearly equal frequencies. If the frequencies are too different, no beats will be formed. The frequency difference between the two notes should be small enough that the listener can hear a fluctuation in the sound.
Equal Amplitudes
The two sound notes must also have equal amplitudes. If the amplitudes are different, the beats will not be heard clearly. The amplitudes should be equal to ensure that the listener can hear the beats distinctly.
Explanation of Correct Answer
The correct answer to the question is option 'D', which states that beats are formed when the two sound notes have nearly equal frequencies and equal amplitudes. This is because the formation of beats depends on the interaction between the two sound waves.
When two sound waves with nearly equal frequencies and equal amplitudes interact, they create a pattern of constructive and destructive interference. This pattern causes the amplitude of the resulting sound wave to fluctuate, creating the beats that can be heard by the listener.
Therefore, if the two sound notes have exactly equal frequencies or exactly equal amplitudes, no beats will be formed. It is the slight difference in frequency and the equality of amplitude that allows for the formation of beats.
Conclusion
In conclusion, the formation of beats depends on the interaction between two sound waves. For beats to be formed, the two sound notes must have nearly equal frequencies and equal amplitudes. This interaction creates a pattern of constructive and destructive interference, resulting in the fluctuation of the amplitude of the resulting sound wave.
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For formation of beats, two sound notes must havea)different amplitudes and different frequenciesb)exactly equal frequencies onlyc)exactly equal amplitudes onlyd)nearly equal frequencies and equal amplitudesCorrect answer is option 'D'. Can you explain this answer?
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