A) 0.25
B) 0.26
C) 0.27
D) 0.28
Correct Answer: A
Solution :
Distance between two consecutive dark fringes \[\beta =\frac{\lambda D}{d}\] \[=\frac{5000\times {{10}^{-10}}\times 1}{0.2\times {{10}^{-2}}}=0.25\]mm.
You need to login to perform this action.
You will be redirected in
3 sec
