- When a wave is propagating from a rarer to a denser medium, which characteristic of the wave does not change and why?
- What is the ratio of the velocity of the wave in the two media of refractive indices $\mu_{1}$ and $\mu_{2}$?
CBSE OUTSIDE DELHI - SET 3 AJMER 2015
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- Frequency does not change, as frequency is a characteristic of the source of waves.
$\frac{\text{v}_{1}}{\lambda}_{1} = \frac{\text{v}_{2}}{\lambda}_{2}=\text{n}$
- The ratio of velocities of wave in two media of refractive indices$\mu_{1}$ and $\mu_{2}$ is $\frac{\mu_{2}}{\mu_{1}}$.
$\frac{\text{v}{1}}{\text{v}_{2}} = \frac{\mu_{2}}{\mu}_{1}$.
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