A) \[\frac{3{{d}^{2}}}{D}\]
B) \[\frac{3{{d}^{2}}}{2D}\]
C) \[\frac{{{d}^{2}}}{D}\]
D) \[\frac{2{{d}^{2}}}{D}\]
Correct Answer: B
Solution :
[B]The situation can be taken as if there are two sources Si and & as shown in figure. Due to these \[{{S}_{1}}\] and \[{{S}_{2}},\] the central maxima will be at P at a distance d/2 from O. |
Path difference \[=\frac{3d.d}{2D}=n\lambda \] |
\[\Rightarrow \lambda =\frac{3{{d}^{2}}}{2nD}\] |
i e. \[\lambda =\frac{3{{d}^{2}}}{2D},\frac{3{{d}^{2}}}{4D}\] |
You need to login to perform this action.
You will be redirected in
3 sec