A phenomenon, which can be observed only in transverse waves.(1) Refraction (2) Diffraction (3) Interferenc(4) Superposition

To determine which phenomenon can be observed only in transverse waves, we need to analyze each option carefully with respect to their nature and behaviors in wave mechanics.

1. Refraction: This is the bending of waves as they pass from one medium to another and occurs for both transverse and longitudinal waves. Hence, it is not exclusive to transverse waves.

2. Diffraction: This refers to the bending of waves around obstacles and the spreading of waves as they pass through openings. It can occur with both types of waves, so it is also not exclusive to transverse waves.

3. Interference: This phenomenon occurs when two or more waves overlap and combine, resulting in a new wave pattern. It can occur with both transverse and longitudinal waves, thus it is not exclusive to transverse waves.

4. Superposition: This principle states that when two or more waves overlap, the resulting wave displacement is equal to the sum of the individual displacements. Superposition applies to both transverse and longitudinal waves, so it is not uniquely associated with transverse waves.

Conclusion

Based on this analysis, none of the listed phenomena are exclusive to transverse waves, but characteristics like polarization, which is unique to transverse waves, would be a relevant consideration. Regardless, from the options provided, the best answer is that all of them can occur in both types of waves. Thus, there isn't a correct choice strictly tied to just transverse waves from the given options. If forced to select one under the assumption of linear wave behavior, "Interference" (Option 3) might be the closest representation where visual patterns (common in transverse) are emphasized, but not exclusively exclusive.

Final Answer

None of the phenomena listed (refraction, diffraction, interference, superposition) occur exclusively in transverse waves; they occur in both transverse and longitudinal waves.