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]

\[I(\theta )={{I}_{0}}/4\]for \[\theta ={{90}^{o}}\]

In the figure is shown Young?s double slit experiment. Q is the positi

1.	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.	\[I(\theta )={{I}_{0}}/4\]for \[\theta ={{90}^{o}}\]
D.	\[3.144\times {{10}^{-7}}m\]
Answer» B. \[6.6\times {{10}^{-6}}m\]

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