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A wave frequency 100 Hz travels along a ...

A wave frequency `100 Hz` travels along a string towards its fixed end. When this wave travels back after reflection, a node is formed at a distance of `10 cm` from the fixed end. The speed of the wave (incident and reflected) is

A

40 m / s

B

20 m / s

C

10 m / s

D

5 m / s

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The correct Answer is:
B
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