Two incoherent sources of light emitting light of intensity `I_(0)` and `3I_(0)` interfere in a medium. Calculate, the resultant intensity at any point.

Two incoherent sources of light emitting light of intensity `I_(0)` an

1.	Two incoherent sources of light emitting light of intensity `I_(0)` and `3I_(0)` interfere in a medium. Calculate, the resultant intensity at any point.
Answer» Since, the two sources are incoherent, hence we do not obtain any sustained interference pattern. We observe an average intensity `I=I_(1)+2sqrt(I_(1)I_(2))cosphi` Now, `cosphi=0` in one complete cycle. `:.I=I_(1)+I_(2)` which is `4I_(0)`

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Two incoherent sources of light emitting light of intensity `I_(0)` and `3I_(0)` interfere in a medium. Calculate, the resultant intensity at any point.

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