physics
posted by Matrix School 2 .
In a Newton's rings experiment, the radius of ring of the lens is 10.0cm and its diameter is 5.0cm. Determine how many of that rings are produced

I am not certain of what you mean radius and diameter. I think you can use
xm = [(m + ½)λR]½
but I don't know what you mean.
http://www.fas.harvard.edu/~scdiroff/lds/LightOptics/NewtonsRings/NewtonsRings.html
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