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Figure shows two coherent sources S(1)-S...

Figure shows two coherent sources `S_(1)-S_(2)` vibrating in same phase. `AB` is an irregular wire lying at a far distance from the sources `S_(1)` and `S_(2)`. Let `(lamda)/d=10^(-3)m,/_BOA=0.12^(@)`. How many bright spots will be seen on the wire, including points `A` and `B`

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