Determine the diameter of Newton's_3rd/5th ring using simulator. Radius of lens should be 55 cm.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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7. Determine the diameter of Newton's_3rd/5th_ ring using
simulator. Radius of lens should be 55 cm.
Transcribed Image Text:7. Determine the diameter of Newton's_3rd/5th_ ring using simulator. Radius of lens should be 55 cm.
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Step 1

Solution:

Calculate the diameter of Newton's 3rd ring from the following relation.

Dn=4nRλ...............................................................................................................................(i)    

Here, n is the order of ring, R is the radius of lens, and λ is the wavelength of monochromatic light.

Substitute 3 for n, 0.55 m for R, 400nm for λ.

D3=4×3×0.55×400×10-9=264×10-8=16.25×10-4=1.625 mm

Hence, the diameter of the 3rd ring is 1.625mm.

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