Waves - Result Question 65
67. 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
Show Answer
Answer:
Correct Answer: 67. (b)
Solution:
- (b) 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.
