In a Young's experiment, two coherent sources are placed 0.90 mm apart and the fringes are observed one metre away. If it produces the second dark fringe at a distance of 1 mm from the central fringe, the wavelength of monochromatic light used would be [CBSE PMT 1992; KCET 2004]

• A. \[60\times {{10}^{-4}}cm\]
• B. \[10\times {{10}^{-4}}cm\]
• C. \[10\times {{10}^{-5}}cm\]
• D. \[6\times {{10}^{-5}}cm\]