A) \[3250\,\,{AA}\]
B) \[6.5\times {{10}^{-4}}mm\]
C) 1.24 microns
D) \[2.6\times {{10}^{-4}}cm\]
Correct Answer: C
Solution :
For first minima \[\theta =\frac{\lambda }{a}\] or \[a=\frac{\lambda }{\theta }\] \[\therefore a=\frac{6500\times {{10}^{-8}}\times 6}{\pi }\] (As 30o = \[\frac{\pi }{6}\]radian) \[=1.24\times {{10}^{-4}}cm=1.24\]microns
You need to login to perform this action.
You will be redirected in
3 sec
