Wave Motion 4 Question 23
22. Four harmonic waves of equal frequencies and equal intensities have phase angles and . When they are superposed, the intensity of the resulting wave is . The value of is
(2015 Adv.)
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Answer:
Correct Answer: 22. 3
Solution:
- Let individual amplitudes are
each. Amplitudes can be added by vector method.
Resultant of
This is also the net resultant.
Now,