A) \[\frac{\lambda }{2(5-\sqrt{2})}\]
B) \[\frac{\lambda }{2(\sqrt{5}-2)}\]
C) \[\frac{\lambda }{(5-\sqrt{2})}\]
D) \[\frac{\lambda }{(\sqrt{5}-2)}\]
Correct Answer: B
Solution :
At point \[P\,\Delta x=\sqrt{5}d\,\,-\,\,2\,d\] \[\Delta \,x=d\left( \sqrt{5}-2 \right)\] For first minima \[\Delta \,x\,\,=\,\,\frac{\lambda }{2}\] \[d=\,\frac{\lambda }{2(\sqrt{5}-2)}\]You need to login to perform this action.
You will be redirected in
3 sec