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Wave Optics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
Question
For the sustained interference of light, the necessary condition is that the two sources should(a) Have constant phase difference(b) Be narrow(c) Be close to each other(d) Of same amplitude
   
   
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Answer

(a) Have constant phase difference

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