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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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Answer» Correct Answer - 3 Angular width `=(lamda)/d=10^(-3)` (given) `:.` No. of fringes within `0.12^(@)` will be `n=(0.12xx2pi)/(360xx10^(-3))~=[2.09]` `:.` The number of bright spots will be three. Hence (B). |
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