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About plano-convex lens

  • Thread starter kenok1216
  • Start date
  • #1
58
1

Homework Statement

λ[/B]
擷取.PNG
擷取2.PNG

Homework Equations


2t=mλ for dark fingers

The Attempt at a Solution


13082167_1091213847616756_1896539001_n.jpg

how can i calculate r5001 dark,also ,what is the meaning of r in qusetion(r=5mm),<----- it is not the curvature R of plano-convex lens also it is not r5001 dark,since it will get incorrect answer so what is radius r mean?
 

Answers and Replies

  • #2
58
1
solved
 
Last edited:

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