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-rw-r--r--3537/CH7/EX7.2/Ex7_2.txt1
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+//Example 7_2
+clc();
+clear;
+//To estimate the numerical aperture
+n1=1.46
+delta=0.05
+NA=n1*sqrt(2*delta)
+printf("The numerical aperture is %.2f",NA)
diff --git a/3537/CH7/EX7.2/Ex7_2.txt b/3537/CH7/EX7.2/Ex7_2.txt
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+The numerical aperture is 0.46 \ No newline at end of file