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Wave Optics — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsWave Optics2 Marks
Question
  1. When a wave is propagating from a rarer to a denser medium, which characteristic of the wave does not change and why?
  2. What is the ratio of the velocity of the wave in the two media of refractive indices $\mu_{1}$ and $\mu_{2}$?
✓

Answer

  1. Frequency does not change, as frequency is a characteristic of the source of waves.
Alternate Answer

$\frac{\text{v}_{1}}{\lambda}_{1} = \frac{\text{v}_{2}}{\lambda}_{2}=\text{n}$
  1. The ratio of velocities of wave in two media of refractive indices$\mu_{1}$ and $\mu_{2}$ is $\frac{\mu_{2}}{\mu_{1}}$.
Alternate Answer

$\frac{\text{v}{1}}{\text{v}_{2}} = \frac{\mu_{2}}{\mu}_{1}$.

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