A) \[\frac{{{I}_{0}}}{2}\]
B) \[\frac{{{I}_{0}}}{\sqrt{2}}\]
C) \[\frac{{{I}_{0}}}{4}\]
D) \[{{I}_{0}}\]
E) \[I_{0}^{2}\]
Correct Answer: C
Solution :
Intensity, \[{{I}_{0}}={{I}_{1}}+{{I}_{2}}+2\sqrt{{{I}_{1}}{{I}_{2}}}\] If \[{{I}_{2}}={{I}_{2}}=I\] (Let) then \[{{I}_{0}}=4I\] When one slit is covered then\[{{I}_{2}}=0\] \[\therefore \] \[I_{0}^{}=I\] \[=\frac{{{I}_{0}}}{4}\]
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