A) \[2.5\times {{10}^{-5}}cm\]
B) \[1.25\times {{10}^{-5}}cm\]
C) \[10\times {{10}^{-5}}cm\]
D) \[5\times {{10}^{-5}}cm\]
Correct Answer: C
Solution :
For first minimum,\[d\sin \theta =\lambda \] \[\Rightarrow \]\[d=\frac{\lambda }{\sin \theta }=\frac{5000\times {{10}^{-8}}cm}{\sin {{30}^{o}}}\] \[=\frac{5000\times {{10}^{-8}}cm}{{}^{1}/{}_{2}}=10\times {{10}^{-5}}cm\]You need to login to perform this action.
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