A travelling wave is partly reflected and partly transmitted from a rigid boundary. Let $a_i, a_r$ and $a_t$ be the amplitude of incident wave, reflected wave and transmitted wave and $I_i, I_r$ and $I_t$ be the corresponding intensities. Then choose the correct alternatives
Medium
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$\mathrm{I}=\frac{1}{2} \rho(\omega \mathrm{A})^{2} \mathrm{V} \omega$
Frequency will remain same but $\rho, v_{w}$ will change depending on medium
So, $\frac{\mathrm{I}_{\mathrm{i}}}{\mathrm{I}_{\mathrm{r}}}=\left(\frac{\mathrm{ai}}{\mathrm{ar}}\right)^{2}$ { same Medium }
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