1.

In figure, Young's double slit experiment Q is the position of the first bright fringe on the right side of O. P is the\[{{11}^{th}}\]fringe on the other side, as measured from Q. If\[\lambda =6000\overset{o}{\mathop{A}}\,\], then \[{{S}_{1}}B\]will be equal to

A. \[6\times {{10}^{-6}}m\]
B. \[6.6\times {{10}^{-6}}m\]
C. \[3.318\times {{10}^{-7}}m\]
D. \[3.144\times {{10}^{-7}}m\]
Answer» B. \[6.6\times {{10}^{-6}}m\]


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