What would be the angular separation between the consecutive bright fringes in Young's double slit experiment with blue green light of wavelength $400 \mathrm{nm}?$ The separation between the slits is $0.001 \mathrm{m}.$

• Correct answer
  A

  $4\times {10}^{-4}\mathrm{rad}$
• B

  $3\times {10}^{-4}\mathrm{rad}$
• C

  $2\times {10}^{-4}\mathrm{rad}$
• D

  $1\times {10}^{-4}\mathrm{rad}$

Hence, the correct answer is option: 'A'.