Two slits separated by a distance of 1 mm are illuminated with red lig – McqOptions

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1.	Two slits separated by a distance of 1 mm are illuminated with red light of wavelength\[6.5\times {{10}^{-7}}m\]. The interference fringes are observed on a screen placed 1 m from the silts. The distance of the third dark fringe from the central fringe will be equal to:
A.	0.65 mm
B.	1.30mm
C.	1.62 mm
D.	1.95mm
Answer» D. 1.95mm

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