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For production of beats the two sources must have[1992]
- a)different frequencies and same amplitude
- b)different frequencies
- c)different frequencies, same amplitude and same phase
- d)different frequencies and same phase
Correct answer is option 'B'. Can you explain this answer?
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For production of beats the two sources must have[1992]a)different fre...
For production of beats different frequencies are essential. The different amplitudes affect the minimum and maximum amplitude of the beats and different phases affect the time of occurrence of minimum and maximum.
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For production of beats the two sources must have[1992]a)different fre...
Explanation:
To produce beats, two sound waves with different frequencies are required. When these two waves are superimposed, the resulting wave exhibits a phenomenon called interference, which leads to the perception of beats.
Interference and Beats:
Interference occurs when two or more waves superpose at a point in space. It can be constructive or destructive. Constructive interference happens when the crests of the waves align, resulting in an amplification of the wave. Destructive interference occurs when the crests of one wave align with the troughs of another, resulting in cancellation.
Beats are a specific type of interference that occurs when two waves with slightly different frequencies are combined. The resulting wave has a periodic variation in amplitude, which is perceived as a pulsating or throbbing sound. This variation is caused by the constructive and destructive interference between the two waves.
Frequency Requirement:
For beats to be produced, the two sources must have different frequencies. If the frequencies are the same, the waves will always be in phase, and no beats will be produced. It is the slight difference in frequency that creates the interference pattern necessary for beat formation.
Amplitude and Phase:
The amplitude and phase of the two waves do not need to be the same for beats to be produced. The amplitude refers to the maximum displacement of the wave from its equilibrium position, while phase refers to the position of the wave within its oscillatory cycle.
While the amplitudes and phases of the two waves can affect the overall loudness and timbre of the resulting beat, they are not crucial for the formation of beats. It is the difference in frequency that is essential.
Therefore, the correct option is option B: different frequencies.
To produce beats, two sound waves with different frequencies are required. When these two waves are superimposed, the resulting wave exhibits a phenomenon called interference, which leads to the perception of beats.
Interference and Beats:
Interference occurs when two or more waves superpose at a point in space. It can be constructive or destructive. Constructive interference happens when the crests of the waves align, resulting in an amplification of the wave. Destructive interference occurs when the crests of one wave align with the troughs of another, resulting in cancellation.
Beats are a specific type of interference that occurs when two waves with slightly different frequencies are combined. The resulting wave has a periodic variation in amplitude, which is perceived as a pulsating or throbbing sound. This variation is caused by the constructive and destructive interference between the two waves.
Frequency Requirement:
For beats to be produced, the two sources must have different frequencies. If the frequencies are the same, the waves will always be in phase, and no beats will be produced. It is the slight difference in frequency that creates the interference pattern necessary for beat formation.
Amplitude and Phase:
The amplitude and phase of the two waves do not need to be the same for beats to be produced. The amplitude refers to the maximum displacement of the wave from its equilibrium position, while phase refers to the position of the wave within its oscillatory cycle.
While the amplitudes and phases of the two waves can affect the overall loudness and timbre of the resulting beat, they are not crucial for the formation of beats. It is the difference in frequency that is essential.
Therefore, the correct option is option B: different frequencies.
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For production of beats the two sources must have[1992]a)different frequencies and same amplitudeb)different frequenciesc)different frequencies, same amplitude and same phased)different frequencies and same phaseCorrect answer is option 'B'. Can you explain this answer?
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