Consider the three waves \[{{z}_{1}},{{z}_{2}}\] and \[{{z}_{3}}\] as – McqOptions

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1.	Consider the three waves \[{{z}_{1}},{{z}_{2}}\] and \[{{z}_{3}}\] as \[{{z}_{1}}=A\sin (kx-\omega \,t)\], \[{{z}_{2}}=A\sin (kx+\omega \,t)\] and \[{{z}_{3}}=A\sin (ky-\omega \,t)\]. Which of the following represents a standing wave [DCE 2004]
A.	\[{{z}_{1}}+{{z}_{2}}\]
B.	\[{{z}_{2}}+{{z}_{3}}\]
C.	\[{{z}_{3}}+{{z}_{1}}\]
D.	\[{{z}_{1}}+{{z}_{2}}+{{z}_{3}}\]
Answer» B. \[{{z}_{2}}+{{z}_{3}}\]

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