Wave Mechanics Stationary Waves Question 37
Question: The following equations represent progressive transverse waves $ Z _{1}=A\cos (\omega t-kx) $ , $ Z _{2}=A\cos (\omega t+kx) $ , $ Z _{3}=A\cos (\omega t+ky) $ and $ Z _{4}=A\cos (2\omega t-2ky) $ . A stationary wave will be formed by superposing
[MP PET 1993]
Options:
A) $ Z _{1} $ and $ Z _{2} $
B) $ Z _{1} $ and $ Z _{4} $
C) $ Z _{2} $ and $ Z _{3} $
D) $ Z _{3} $ and $ Z _{4} $
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Answer:
Correct Answer: A
Solution:
When two waves of equal frequency and travelling in opposite direction superimpose, then the stationary wave is produced.
Hence Z1 and Z2 produces stationary wave.
BETA
