From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 1847/CH3/EX3.2/Ch03Ex2.sce | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100755 1847/CH3/EX3.2/Ch03Ex2.sce

(limited to '1847/CH3/EX3.2')

diff --git a/1847/CH3/EX3.2/Ch03Ex2.sce b/1847/CH3/EX3.2/Ch03Ex2.sce
new file mode 100755
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+++ b/1847/CH3/EX3.2/Ch03Ex2.sce
@@ -0,0 +1,21 @@
+// Scilab Code Ex3.2:: Page-3.9 (2009)
+clc; clear;
+v1 = 36;     // Position of the strongest image from the zone plate, cm
+v2 = 9;     // Position of the next image from the zone plate, cm
+lambda = 5890e-008;  // Wavelength of light used, cm
+r1 = 1;   // For simplicity assume radius of first ring of zone plate to be unity, cm
+n = 1;  // Order of zone plate
+// As 1/v1-1/u = n*lambda/r1^2 = 1/3*(1/v2-1/u), solving for u
+u = 2/(3/36-1/9);       // Distance of the zone plate from source, cm
+// As 1/v-1/u = n*lambda/r1^2, solving for r1
+r1 = sqrt(lambda/(1/v1-1/abs(u)));       // Radius of first zone, cm
+f1 = r1^2/(n*lambda);   // Principal focal length, cm
+
+printf("\nThe distance of the zone plate from source = %2d cm", u);
+printf("\nThe radius of first zone = %3.1e cm", r1);
+printf("\nThe principal focal length = %4.1f cm", f1);
+
+// Result 
+// The distance of the zone plate from source = -72 cm
+// The radius of first zone = 6.5e-002 cm
+// The principal focal length = 72.0 cm 
-- 
cgit