If the photoelectric effect is observed for one metal, can you conclude that the effect will also be observed for another metal under the same conditions? Explain.

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### Photoelectric Effect and Different Metals

**Question:** If the photoelectric effect is observed for one metal, can you conclude that the effect will also be observed for another metal under the same conditions? Explain.

**Explanation:**

The photoelectric effect refers to the phenomenon where light shining on a metal surface ejects electrons from that surface. Whether this effect is observed depends on the wavelength (or frequency) of the light and the type of metal.

Each metal has a characteristic called the "work function," which is the minimum energy required to eject an electron. If the energy of the incident light (determined by its frequency) is greater than the work function of the metal, the photoelectric effect will occur. 

Different metals have different work functions. Therefore, if the photoelectric effect is observed for one metal under certain conditions (e.g., a specific light wavelength or intensity), this does not necessarily mean that the effect will also be observed for another metal under the same conditions. Whether the new metal exhibits the photoelectric effect depends on whether the energy of the light exceeds the work function of that particular metal.

For example, if you observe the photoelectric effect in cesium with a particular wavelength of light, you may not observe it in zinc using the same light, because zinc has a higher work function compared to cesium.

In summary, while the observation of the photoelectric effect in one metal does indicate that the light’s energy is sufficient to overcome the work function for that metal, the same conclusion cannot be directly extended to another metal without considering its work function relative to the light's energy.
Transcribed Image Text:### Photoelectric Effect and Different Metals **Question:** If the photoelectric effect is observed for one metal, can you conclude that the effect will also be observed for another metal under the same conditions? Explain. **Explanation:** The photoelectric effect refers to the phenomenon where light shining on a metal surface ejects electrons from that surface. Whether this effect is observed depends on the wavelength (or frequency) of the light and the type of metal. Each metal has a characteristic called the "work function," which is the minimum energy required to eject an electron. If the energy of the incident light (determined by its frequency) is greater than the work function of the metal, the photoelectric effect will occur. Different metals have different work functions. Therefore, if the photoelectric effect is observed for one metal under certain conditions (e.g., a specific light wavelength or intensity), this does not necessarily mean that the effect will also be observed for another metal under the same conditions. Whether the new metal exhibits the photoelectric effect depends on whether the energy of the light exceeds the work function of that particular metal. For example, if you observe the photoelectric effect in cesium with a particular wavelength of light, you may not observe it in zinc using the same light, because zinc has a higher work function compared to cesium. In summary, while the observation of the photoelectric effect in one metal does indicate that the light’s energy is sufficient to overcome the work function for that metal, the same conclusion cannot be directly extended to another metal without considering its work function relative to the light's energy.
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