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 wavelength $\lambda$ and transmitted wave $\lambda \text{'}$. Then

• A. $\lambda \text{'}<\lambda$
• B. $\lambda \text{'}=\lambda$
• C. $\lambda \text{'}>\lambda$
• D. None

Answer 1

The correct option is A $\lambda \text{'}<\lambda$

If the reflected wave is inverted medium $\left(1\right)$ is denser. In denser medium, speed in smaller i.e., $v_2<v_1$ or $\lambda \text{'}<\lambda$.

Final answer: (𝒄)