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

---
 2780/CH2/EX2.20/Ex2_20.sce | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100755 2780/CH2/EX2.20/Ex2_20.sce

(limited to '2780/CH2/EX2.20')

diff --git a/2780/CH2/EX2.20/Ex2_20.sce b/2780/CH2/EX2.20/Ex2_20.sce
new file mode 100755
index 000000000..4b13f89cc
--- /dev/null
+++ b/2780/CH2/EX2.20/Ex2_20.sce
@@ -0,0 +1,12 @@
+clc
+//to calculate thickness of the film
+mu=1.33 //refractive index of soap film (unitless)
+i=45*%pi/180
+//the formula is mu=sini/sinr 
+sinr=0.5317 
+cosr=sqrt(1-(sinr)^2)
+//for destructive interference
+lambda=5890*10^-10 //wavelength in m
+n=1
+t=n*lambda/(2*mu*cosr)
+disp("the thickness of the film is t="+string(t)+"m")
-- 
cgit