If the intensity of each wave in the observed interference pattern in Young's double slit experiment is $I_0$,then for some point $P$ where the phase difference is $\phi$,the resultant intensity $I$ will be:

  • A
    $I = I_0 \cos \phi$
  • B
    $I = I_0 \cos^2 \phi$
  • C
    $I = I_0 (1 + \cos \phi)$
  • D
    $I = 2I_0 (1 + \cos \phi)$

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