Young's Double Slit Experiment Video Lessons

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Problem: Four trials of Young's double-slit experiment are conducted.(a) In the first trial, blue light passes through two fine slits400 μm apart and forms an interference pattern on a screen 4 m away. (b) In a second trial, red light passes through the same slits and falls on the same screen. (c) A third trial is performed with red light and the same screen, but with slits 800 μmapart. (d) A final trial is performed with red light, slits 800μm apart, and a screen 8 m away.Rank the trials according to the distance between the central maximum and the first-order side maximum on the screen.

FREE Expert Solution

Condition for maximum:

d sin θ=mλ

For maximum, m = 1

y = Lλ/d

1 μm = 1000 nm

1 m = 1000000 μm

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Problem Details

Four trials of Young's double-slit experiment are conducted.

(a) In the first trial, blue light passes through two fine slits400 μm apart and forms an interference pattern on a screen 4 m away. 

(b) In a second trial, red light passes through the same slits and falls on the same screen. 

(c) A third trial is performed with red light and the same screen, but with slits 800 μmapart. 

(d) A final trial is performed with red light, slits 800μm apart, and a screen 8 m away.

Rank the trials according to the distance between the central maximum and the first-order side maximum on the screen.

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