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Find the intensity at a point on a screen in Young's double slit experiment where the interfering waves of equal intensity have a path different of (i) λ/4, and (ii) λ/3.               (2 marks)                                                              

                                                                                                           

 

 

Explanation:

Path difference λ4phase difference π2 Path difference λ3phase difference 2π3                   12 marks                    I=4Io cos2ϕ2                                                12 marks                                                          i)  I1=4IoX12=2Io                                                          12  marks                                                              ii)  I2=4IoX14=Io                                                            12  marks                                                           

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