A total of 34 bright and 34 dark newtons rings not counting, Ask an Expert

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Q. A 55 cm diameter wheel accelerates uniformly from 250 rpm to 365 rpm in 7 s. how far will a point on the edge of the wheel have traveled in this time?

Q. A total of 34 bright and 34 dark Newton's rings (not counting the dark spot at the center) are observed when 550 -nm light falls normally on a planoconvex lens resting on a flat glass surface. How much thicker is the center than the edges?

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