4) Two identical sinusoidal waves travel in the same direction at the same speed with an amplitude A. The phase difference between the two waves is is increased with respect to the amplitude of the individual waves, A, by: 69.8°. The amplitude of the resultant wave, Aresultant %3D (a) 18% (b)64% (c) 82% (d) 164%
4) Two identical sinusoidal waves travel in the same direction at the same speed with an amplitude A. The phase difference between the two waves is is increased with respect to the amplitude of the individual waves, A, by: 69.8°. The amplitude of the resultant wave, Aresultant %3D (a) 18% (b)64% (c) 82% (d) 164%
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Transcribed Image Text:4) Two identical sinusoidal waves travel in the same direction at the same speed with an amplitude A. The
phase difference between the two waves is
is increased with respect to the amplitude of the individual waves, A, by:
69.8°. The amplitude of the resultant wave, Aresultant ·
(a) 18%
(b)64%
(c) 82%
(d) 164%
5) Two identical sinusoidal waves with frequency of 20 Hz travel in the same direction at the same speed.
The two waves originate from the same point but with a time difference At. The amplitude of the
resultant wave is Aes = AV3. The minimum possible time difference between the starting moments of
%3D
the two waves is, At =:
(a) 1/120 sec
(b)0.477 sec
(c) 1/80 sec
(d) 0.716 sec
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