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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /446/CH4/EX4.10/4_10.txt | |
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Diffstat (limited to '446/CH4/EX4.10/4_10.txt')
| -rwxr-xr-x | 446/CH4/EX4.10/4_10.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/446/CH4/EX4.10/4_10.txt b/446/CH4/EX4.10/4_10.txt new file mode 100755 index 000000000..0e7039345 --- /dev/null +++ b/446/CH4/EX4.10/4_10.txt @@ -0,0 +1,16 @@ + Ex-4.10
+ Group velocity is found out from Eq. 4.18.
+
+ Since k=2*pi/w ; Vphase= w/k
+
+ w/k = sqrt(g/k)
+
+ w=sqrt(g*k)
+
+differetiating on both sides
+
+dw=1/2 * sqrt(g) * k^-1/2 * dk
+
+ dw= 1/2 * sqrt(g/k)
+
+Hence Vgroup= Vphase/2
\ No newline at end of file |