Question
A wave pulse, travelling on a two -piece string, gets partially reflected and partially transmitted at the junction. The reflected wave is inverted in shape as compared to the incident one. If the incident wave has wavelengt $\lambda$ and the transmitted wave $\lambda'.$

  1. $\lambda'>\lambda$

  2. $\lambda'=\lambda$

  3. $\lambda'<\lambda$

  4. Nothing can be said about the relation of $\lambda$ and $\lambda'.$

Answer

  1. $\lambda'<\lambda$

Explanation:

As $\text{v}=\sqrt{\frac{\text{f}}{\mu}}$

A wave pulse travels faster in a thinner string. The wavelength of the transmitted wave is equal to the wavelength of the Incident wave because the frequency remains constant.

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