A Monochromatic Light Beam Is Incident on the Surface of a Metal

question 31

Multiple Choice

A monochromatic light beam is incident on the surface of a metal having a work function of 2.50 eV.If a 1.0-V stopping potential is required to make the electron current zero,what is the wavelength of light? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s,1 eV = 1.60 × 10^-19 J)

• A)355 nm
• B)423 nm
• C)497 nm
• D)744 nm

---

Definitions:

Intellectual Property Rights

Legal rights that grant creators control over and protection for their inventions, writings, music, designs, and other works that are a product of their creativity.

Access Controls

Measures or techniques used to restrict entry to resources, data, or physical spaces to authorized users only.

Copyright Laws

Regulations that protect the creative work of authors, composers, artists, and others by giving them exclusive rights to use and distribute their work.

Intellectual Property

Legal rights that arise from intellectual activity in the industrial, scientific, literary, and artistic fields, protecting creators' works and innovations.