A) 20 cm
B) 10 cm
C) 40 cm
D) 30 cm
Correct Answer: A
Solution :
On comparing the given equation with standard equation \[y=2a\sin \frac{2\pi x}{\lambda }\cos \,\frac{2\pi vt}{\lambda }\]] We get \[\frac{2\pi }{\lambda }=\frac{\pi }{20}\Rightarrow \lambda =40\] Separation between two consecutive nodes = \[\frac{\lambda }{2}=\frac{40}{2}=20\,\,cm\]
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