---
title: "An experiment investigating the photoelectric effect is performed by directing monochromatic light onto clean metal surfaces in an evacuated chamber. Four different trials are conducted by varying the target metal’s work function, the frequency of the incident light, and the beam intensity, as shown in the table, where the constant photon energy unit is defined by \\(\\Phi_0 = h f_0\\).  | Trial | Work Function | Incident Frequency | Beam Intensity | | :—: | :—: | :—: | :—: | | 1 | \\(\\Phi_0\\) | \\(2.0 f_0\\) | \\(I_0\\) | | 2 | \\(2.0\\Phi_0\\) | \\(1.5 f_0\\) | \\(3.0 I_0\\) | | 3 | \\(\\Phi_0\\) | \\(3.0 f_0\\) | \\(2.0 I_0\\) | | 4 | \\(0.5\\Phi_0\\) | \\(2.0 f_0\\) | \\(2.0 I_0\\) |  Which row in the table correctly indicates whether photoelectrons are emitted in Trial 2, which trial yields photoelectrons with the greatest maximum kinetic energy \\(K_{\\max}\\), and which trial yields photoelectrons with the shortest minimum de Broglie wavelength \\(\\lambda_{\\min}\\)?"
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url: "https://nerd-notes.com/ubq/123570/"
date_modified: "2026-09-28T12:00:13+00:00"
---

# An experiment investigating the photoelectric effect is performed by directing monochromatic light onto clean metal surfaces in an evacuated chamber. Four different trials are conducted by varying the target metal’s work function, the frequency of the incident light, and the beam intensity, as shown in the table, where the constant photon energy unit is defined by \(\Phi_0 = h f_0\).

| Trial | Work Function | Incident Frequency | Beam Intensity |
| :—: | :—: | :—: | :—: |
| 1 | \(\Phi_0\) | \(2.0 f_0\) | \(I_0\) |
| 2 | \(2.0\Phi_0\) | \(1.5 f_0\) | \(3.0 I_0\) |
| 3 | \(\Phi_0\) | \(3.0 f_0\) | \(2.0 I_0\) |
| 4 | \(0.5\Phi_0\) | \(2.0 f_0\) | \(2.0 I_0\) |

Which row in the table correctly indicates whether photoelectrons are emitted in Trial 2, which trial yields photoelectrons with the greatest maximum kinetic energy \(K_{\max}\), and which trial yields photoelectrons with the shortest minimum de Broglie wavelength \(\lambda_{\min}\)?

An experiment investigating the photoelectric effect is performed by directing monochromatic light onto clean metal surfaces in an evacuated chamber. Four different trials are conducted by varying the target metal's work function, the frequency of the incident light, and the beam intensity, as shown in the table, where the constant photon energy unit is defined by \(\Phi_0 = h f_0\).

| Trial | Work Function | Incident Frequency | Beam Intensity |
| :---: | :---: | :---: | :---: |
| 1 | \(\Phi_0\) | \(2.0 f_0\) | \(I_0\) |
| 2 | \(2.0\Phi_0\) | \(1.5 f_0\) | \(3.0 I_0\) |
| 3 | \(\Phi_0\) | \(3.0 f_0\) | \(2.0 I_0\) |
| 4 | \(0.5\Phi_0\) | \(2.0 f_0\) | \(2.0 I_0\) |

Which row in the table correctly indicates whether photoelectrons are emitted in Trial 2, which trial yields photoelectrons with the greatest maximum kinetic energy \(K_{\max}\), and which trial yields photoelectrons with the shortest minimum de Broglie wavelength \(\lambda_{\min}\)?

- **A.** | Yes | Trial 2 | Trial 2 |
- **B.** | No | Trial 4 | Trial 1 |
- **C.** | No | Trial 4 | Trial 4 |
- **D.** | No | Trial 3 | Trial 3 |

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/123570/*