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Question
Physics
Three waves of equal frequency having amplitudes 10mm, 4mm and 7mm arrive at a given point with successive phase difference π/2 . The amplitude of the resulting wave in mm is given by
Q. Three waves of equal frequency having amplitudes 10mm, 4mm and 7mm arrive at a given point with successive phase difference
π
/2
. The amplitude of the resulting wave in mm is given by
1758
228
Waves
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A
7
12%
B
6
24%
C
5
40%
D
4
24%
Solution:
a
res
=
a
1
2
+
(
a
2
−
a
3
)
2