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As a soap bubble evaporates, it appears ...

As a soap bubble evaporates, it appears black just before it breaks. Explain this phenomenon in terms of the phase changes that occur on reflection form the two surface of the soap film.

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To explain why a soap bubble appears black just before it breaks, we can analyze the phenomenon using the principles of wave optics, particularly focusing on the phase changes that occur upon reflection from the two surfaces of the soap film. ### Step-by-Step Solution: 1. **Understanding the Soap Bubble Structure**: A soap bubble consists of a thin film of soap solution trapped between two layers of air. This means there are two surfaces from which light can reflect: the outer surface (air-soap interface) and the inner surface (soap-air interface). **Hint**: Remember that a soap bubble has two interfaces where light can reflect. ...
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