In a single slit diffraction experiment, for wavelength $\lambda$, the half angular width of the central maximum is $\theta$. For a wavelength $p\lambda$, the half angular width of the central maximum is $q\theta$. What is the ratio of the half angular widths of the first secondary maximum in the first case to the second case?

  • A
    $p : 1$
  • B
    $1 : q$
  • C
    $p : q$
  • D
    $q : p$

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