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diff --git a/1694/CH2/EX2.13/EX2_13.sce b/1694/CH2/EX2.13/EX2_13.sce
new file mode 100644
index 000000000..a96f188bb
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+++ b/1694/CH2/EX2.13/EX2_13.sce
@@ -0,0 +1,15 @@
+clear;
+clc;
+printf("\nEx2.13\n");
+//page no.-63
+//given
+v=500;..............//speed of e in m/s
+m=9.11*10^-31;......//mass of e
+del_v=0.0001;........//change in velocity
+h=6.625*10^-34;......//planck's constant
+p=m*v;.................//momentum
+del_p=p*del_v;..........//change in momentum in kg*m/sec
+
+del_x=h/(2*%pi*del_p)...............//uncertainty in position in m
+
+printf("\nminimum uncertainty in position is 2.318 mm\n");