A) 50
B) 100
C) 200
D) 400
Correct Answer: B
Solution :
[b] Constructive interference happens when \[2t=(m-1/2)\lambda \]. The minimum value for m=is m=1, the maximum value is the integer portion of\[\frac{2d}{\lambda }+\frac{1}{2}=\frac{2\times 0.034\times {{10}^{-3}}}{680\times {{10}^{-9}}}+\frac{1}{2}=100.5\] \[{{m}_{\max }}=100\]
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