InterviewSolution
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InterviewSolution
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Four harmonic waves of equal freuencied and equal intensity `I_(0)` have phase angles `0, (pi)/(3), (2pi)/(3)` and `pi`. When they are superposed, the intensity of the resulting wave is `nI_(0)`. The value of `n` is |
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Answer» Correct Answer - C (3) `y = sqrt(I_(0))[sinO + sin((pi)/(3)) + sin((2pi)/(3)) + sinpi)]` `y = sqrt(I_(0))[sqrt(3)/(2) + sqrt(3)/(2)] = sqrt(3)sqrt(I_(0))` :. `I_(r) =y^(2) = 3I_(0)` rArr `n = 3` |
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