1 files changed, 18 insertions, 0 deletions
diff --git a/1694/CH1/EX1.30/EX1_30.sce b/1694/CH1/EX1.30/EX1_30.sce
new file mode 100644
index 000000000..92873174f
--- /dev/null
+++ b/1694/CH1/EX1.30/EX1_30.sce
@@ -0,0 +1,18 @@
+clear;
+clc;
+printf("\nEx1.30\n");
+//page no.-38
+//given
+V=854;.............//accelerated voltage in volt
+theta=56;.........//angle
+n=1;..............//order
+m=9.1*10^-31;......//mass of electron
+e=1.6*10^-19;.....//charge
+h=6.625*10^-34;...//planck constant
+
+lambda=h/sqrt(2*m*e*V).........//wavelength in m
+//Now by bragg's law
+
+d=(n*lambda)/(2*sind(theta))......//interplanar spacing in m
+
+printf("\nspacing is 2.53*10^-11 m\n");