Kaushik Asked a Question
May 5, 2020 9:43 pmpts 30 pts
interference fringes are seen at an observation plane z=0 by the superposition....
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  • Ruby negi
    option b is correct because this is the condition of interference that phase difference is integral multiple of integer...
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  • Dhairya sharma thankyou
    it's answer is b because k.r shows it's phase and the difference in phases should be even integral multiple of integer.
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    Kaushik
    why only even integral?