A) 5 cm
B) 1.5 cm
C) 10 cm
D) 20 cm
Correct Answer: D
Solution :
Here, the equation is \[y=0.8\cos \frac{\pi x}{20}\sin 200\pi t\] ?...(i) Now, the standard equation of stationary wave is \[y=a\cos \frac{2\pi x}{\lambda }\sin \omega t\] ??(ii) Now, comparing the given equation (i) with standard equation (ii) we obtain \[\frac{2\pi }{\lambda }=\frac{\pi }{20}\] So, \[\lambda =40cm\] Hence, distance between consecutive node is \[=\frac{\lambda }{2}=\frac{40}{2}=20cm\]You need to login to perform this action.
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