A) 1 m
B) 1/2 m
C) 5 m
D) 2n m
Correct Answer: B
Solution :
Equation of vibration \[y=1\,\cos \,2\pi \,\sin \,2\pi x\] \[=1\,\cos \,2\pi \,\sin \,\frac{\pi x}{1/2}\] Comparing this equation with \[y=a\,\cos \,2\pi \,\sin \,\frac{\pi x}{\lambda }\Rightarrow a=1\] Minimum length of string \[=\frac{1}{2}a=\frac{1}{2}\times 1\] \[=\frac{1}{2}m\]You need to login to perform this action.
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