In Young's double-slit experiment, the distance between slits and the screen is $1 \mathrm{m}$ and monochromatic light of wavelength $600 \mathrm{nm}$ is being used. A person standing near the slits is looking at the fringe pattern. When the separation between the slits is varied, the interference pattern disappears for a particular distance $d_0$ between the slits. If the angular resolution of the eye is $\frac{1}{60}°$, then the value of $d_0$ is close to

• A

  $1 \mathrm{mm}$
• B

  $3 \mathrm{mm}$
• Correct answer
  C

  $2 \mathrm{mm}$
• D

  $4 \mathrm{mm}$

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