1 files changed, 21 insertions, 0 deletions
diff --git a/3869/CH2/EX2.8/Ex2_8.sce b/3869/CH2/EX2.8/Ex2_8.sce
new file mode 100644
index 000000000..a2fe3c220
--- /dev/null
+++ b/3869/CH2/EX2.8/Ex2_8.sce
@@ -0,0 +1,21 @@
+clear
+//
+//
+//
+
+//Variable declaration
+theta=10*%pi/180           //angle(radian)
+dtheta=3*%pi/(60*60*180)           //difference of angle(radian)
+dlamda=5*10**-9                //wavelength(cm)
+k=2
+
+//Calculation
+lamda=sin(theta)*dlamda/(cos(theta)*dtheta)       
+lamdanew=lamda+dlamda             //wavelength of lines(cm)
+N=lamda/(dlamda*k)
+Ne=N*k*lamda/sin(theta)      //minimum grating width required(cm)
+
+//Result
+printf("\n wavelength of lines is %0.1f  *10**-8 cm",lamda*10**8)
+printf("\n answer given in the book varies due to rounding off errors")
+printf("\n minimum grating width required is %0.1f  cm",Ne)