In a double slit experiment slits $${{S}_{1}}$$, $${{S}_{2}}$$ is illuminated by a coherent light of wavelength$$\lambda $$. The slits are separated by a distance d. The experimental set up is modified by using plane mirrors as shown in figure. Find the fringe width of interference pattern on the screen.

Question

TuteeHUB · Accepted Answer

$$\frac{(2{{D}_{1}}+3{{D}_{2}})\lambda }{d}$$

TuteeHUB · Answer

$$\frac{(3{{D}_{1}}+2{{D}_{2}})\lambda }{d}$$

TuteeHUB · Answer

$$\frac{(3{{D}_{2}}-3{{D}_{1}})\lambda }{d}$$

TuteeHUB · Answer

$$\frac{(3{{D}_{1}}-2{{D}_{2}})\lambda }{2d}$$

1.	In a double slit experiment slits \[{{S}_{1}}\], \[{{S}_{2}}\] is illuminated by a coherent light of wavelength\[\lambda \]. The slits are separated by a distance d. The experimental set up is modified by using plane mirrors as shown in figure. Find the fringe width of interference pattern on the screen.
A.	\[\frac{(3{{D}_{1}}+2{{D}_{2}})\lambda }{d}\]
B.	\[\frac{(2{{D}_{1}}+3{{D}_{2}})\lambda }{d}\]
C.	\[\frac{(3{{D}_{2}}-3{{D}_{1}})\lambda }{d}\]
D.	\[\frac{(3{{D}_{1}}-2{{D}_{2}})\lambda }{2d}\]
Answer» B. \[\frac{(2{{D}_{1}}+3{{D}_{2}})\lambda }{d}\]

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