Question

For production of beats the two sources must have (a) different frequencies and same amplitude

Answer 1

Answer:

For production of beats, different frequencies are essential. The different amplitudes effect the minimum and maximum amplitude of the beats. if frequencies are different, phases will be different.

Answer 2

Answer:

For production of beats the two sources must have different frequencies. Hence the correct answer is B. For the beat production, different frequencies are needed. These different amplitudes can affect the maximum and minimum amplitude of these beats. If the frequencies can be different, the phases would be different. The frequency can be number of the occurrences of the repeating event in unit time.