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authorprashantsinalkar2017-10-10 12:27:19 +0530
committerprashantsinalkar2017-10-10 12:27:19 +0530
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+clc;
+clear;
+f=4 //focal length of lens in m
+myu=1.50 //refractive index
+lambda=5460*10^-10 //wavelength in m
+n=5 //fifth bright ring
+
+//calculation
+R=(myu-1)*2*f //radius of curvature in cm
+D5=sqrt(2*(2*n-1)*lambda*R)
+
+mprintf("The diameter of the fifth bright ring is = %1.5f cm",D5)
+//The answer provided in the textbook is wrong.