In a Young's double-slit experiment,interference fringes are obtained on a screen placed at a certain distance from the slits using monochromatic light. If the screen is moved towards the slits by $5 \times 10^{-2} \, m$,the fringe width changes by $3 \times 10^{-5} \, m$. If the distance between the slits is $10^{-3} \, m$,find the wavelength of the light.

• A
  $6 \times 10^{-5} \, m$
• B
  $6 \times 10^{-3} \, m$
• C
  $6 \times 10^3 \, m$
• D
  $6 \times 10^{-7} \, m$