Knockout JEE Main April 2021 (One Month)
An exhaustive E-learning program for the complete preparation of JEE Main..
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As we learnt in
Young Double Slit Experiment -
- wherein
Ref y be the distance from the central maximum to the point where the bright fringes due to both the wavelength coincides
For
,
,
for
, 
i.e. with respect to central maximum 4th bright fringe of
coincides with 5th bright fringe of 