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14. waves and sound — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics14. waves and sound1 Mark
MCQ
Select the correct statement about the reflection and refraction of a wave at the interface between the medium $1$ and $2$ the
  • A
    Reflected wave has a phase change of $\pi$
  • B
    Wavelength of reflected wave is less than that of incident wave
  • ✓
    Frequency of transmitted wave is same as that of incident wave
  • D
    Frequency of wave changes as per nature of boundary
✓

Answer

Correct option: C.
Frequency of transmitted wave is same as that of incident wave
c
(c)

It is not said which of waves $1$ and $2$ is denser. But frequency of a wave remains same in all media. Hence option $(c)$ is correct.

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