Coherent light with lambda equals 644 n m illuminates on a double slit. The white screen is 6 cm from the slits. The two slits a
re spaced apart by 2,783 nm. Determine the distance on the screen between the 4th and the 2nd bright fringes above the central maximum.
1 answer:
Answer: 2.77 cm
Explanation:
Given
Wavelength of light is 
White screen is at a distance of 
Distance between two slits is 
Distance between two bright fringe is 
So, the distance between 4 th and 2nd bright fringe is

The distance between 4 th and 2 nd brigth fringe is 2.77 cm.
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