Question

Select the correct statement about the reflection and refraction of a wave at the interface between the medium 1 and 2 the
1. reflected wave has a phase change of pi
2. wavelength of reflected wave is less than that of incident wave
3. frequency of transmitted wave is same as that of incident wave
4. frequency of wave changes as per nature of boundary

Answer 1

Answer:

3

Explanation:

frequency of transmitted wave is same as that of incident wave

Answer 2

Answer:

The correct statement about the reflection and refraction of a wave at the interface between the medium 1 and medium 2 the frequency of the transmitted wave is same as that of incident wave.(option -3)

Explanation:

Solution :

The reflection and refraction of a wave at the interface between the medium 1 and 2 can be determined by two cases.

CaseI:

When medium 1<medium 2

Change in phase can be observed and equal to pi.

Case II:

When medium 2<medium 1

There will be no change in phases.

As, Reflection and Refraction of a wave at the interface between the medium 1 and medium 2 is same , then frequency of transmitted wave is same as that of incident wave(3).

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