A) \[\frac{1}{{{A}_{1}}}+\frac{1}{{{A}_{2}}}\]
B) \[\frac{{{A}_{1}}-{{A}_{2}}}{2}\]
C) \[\sqrt{{{A}_{1}}{{A}_{2}}}\]
D) \[\frac{{{A}_{1}}+{{A}_{2}}}{2}\]
Correct Answer: C
Solution :
By displacement method, size of \[\operatorname{object} \left( O \right) =\,\,\sqrt{{{l}_{1}}\,{{l}_{2}}}\] \[\therefore \,\,\,Area\,\,of\,\,source\,\,light\,\,=\,\,\sqrt{{{A}_{1}}{{A}_{2}}}\]You need to login to perform this action.
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