Q. 8

In a Young’s double slit experiment, two narrow vertical slits placed 0.800 mm apart are illuminated by the same source of yellow light of wavelength 589 nm. How
far are the adjacent bright bands in the interference pattern observed on a screen 200 m away?

Answer :

Given, separation between the slits

wavelength of light used,


The distance between the screen and the slit,


therefore, the distance between two adjacent bright bands are




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