A) The intensities of both the maxima and the minima increase
B) The intensity of the maxima increases and the minima has zero intensity
C) The intensity of the maxima decreases and that of the minima increases
D) The intensity of the maxima decreases and the minima has zero intensity
Correct Answer: A
Solution :
[a] \[{{I}_{\min }}\propto {{({{A}_{1}}-{{A}_{2}})}^{2}}\] \[{{I}_{\min }}\propto {{(2a-a)}^{2}}\] Clearly, the intensity of minima increases. Again, \[{{I}_{\max }}\propto {{({{A}_{1}}+{{A}_{2}})}^{2}}\] \[{{I}_{\max }}\propto {{(2a+a)}^{2}}\] Clearly, the intensity of maxima increases.
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