In the figure is shown Young?s double slit experiment. Q is the position of the first bright fringe on the right side of O. P is the 11th fringe on the other side, as measured from Q. If the wavelength of the light used is \[6000\times {{10}^{-10}}m\], then \[{{S}_{1}}B\] will be equal to [CPMT 1986, 92]

• A.            \[6\times {{10}^{-6}}m\]
• B.            \[6.6\times {{10}^{-6}}m\]
• C.            \[3.138\times {{10}^{-7}}m\]
• D.            \[3.144\times {{10}^{-7}}m\]