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A plane wave $y=A\,\, sin\,\, \omega \left( {t - \frac{x}{v}} \right)$ undergo a normal incidence on a plane boundary separating medium $M_1$ and $M_2$ and splits into a reflected and transmitted wave having speeds $v_1$ and $v_2$ then
  • Afor all values of $v_1$ and $v_2$ the phase of transmitted wave is same as that of incident wave
  • Bthe phase of reflected wave depends upon $v_1$ and $v_2$
  • Cthe phase of transmitted wave depends upon $v_1$ and $v_2$
  • Dboth $(A)$ and $(B)$
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