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A beam of light consisting of two wavele...

A beam of light consisting of two wavelengths, 6500 Å and 5200Å , is used, to obtain, interference fringes in a Young’s double slit experiment
Q(a) Find the distance of the third bright fringe on the screen from the central maximum for wavelength 6500 Å
.) What is the least distance form the central maximum where the bright fringes due to both wavelengths coincide?
The distance between the slits is 2 mm and the distance between the plane of slits and p the screen is 120 cm.

Text Solution

Verified by Experts

The correct Answer is:
(a) 1.17 mm (b) 1.56 mm
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