Question

a) When a wave is propagating from a rarer to a denser medium, which characteristic of the wave does not change and why?
b) What is the ratio of the velocity of the wave in the two media of refractive index MU1and MU2?

Answer 1

Dear Student
Dear Student
when the wave travel from one medium to another its one character does not changes which is frequency because it only depends upon source what ever the frequency of source , the wave propagate with same wave.
the ratio of

$$\begin{gathered} \frac{{\mu }_1}{{\mu }_2}=\frac{{\displaystyle \frac{c}{v_1}}}{{\displaystyle \frac{c}{v_2}}}(here{v}_{1}and{v}_{2}arespeedofwaveinmediumandcisspeedoflightwave) \\ \frac{{\mu }_1}{{\mu }_2}=\frac{v_2}{v_1} \end{gathered}$$

Regards