Question A7In a double-slit experiment, two narrow identical parallel slits are cut in an opaque plate, with aseparation between the slits of 0.8 mm. The slits are illuminated from the left with a laser and abeam-expander, then interference fringes are observed on a white screen at a distance of 3 m tothe right.The spacing between adjacent bright fringes is measured to be 2.37 mm; calculate the wave-length of the laser light.

Given, Distance between slits = 0.8 mmDistance from slits to white screen = 3 mSpacing between…

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