A) 0.24 cm
B) 0.2 cm
C) 2.4 cm
D) 0.024 cm
Correct Answer: B
Solution :
Fringe width, \[\beta =\frac{d\lambda }{d}\] \[d=\frac{D\lambda }{\beta }\] \[=\frac{6000\times {{10}^{-10}}\times (40\times {{10}^{-2}})}{0.012\times {{10}^{-2}}}\] \[=0.2\,\,cm\]You need to login to perform this action.
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