A) \[5000\,\,{AA}\]
B) \[6000\,\,{AA}\]
C) \[7000\,\,{AA}\]
D) \[8000\,\,{AA}\]
Correct Answer: A
Solution :
By using \[{{x}_{n}}=\frac{n\,\lambda \,D}{d}\] \[\Rightarrow (5\times {{10}^{-3}})=\frac{10\times \lambda \times 1}{(1\times {{10}^{-3}})}\Rightarrow \lambda =5\times {{10}^{-7}}m\]\[=5000\,{AA}\]
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