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

Recognize the importance of patient safety and comfort during examination room preparation.

Be familiar with standard supplies and equipment necessary for a typical examination room.

Understand the necessity of patient instruction regarding disease prevention and examination preparation.

Know the different examination positions and their corresponding purposes.

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Definitions:

Factor Analysis

A statistical method used to identify underlying variables, or factors, that explain the pattern of correlations within a set of observed variables.

Statistical Procedure

A method of collecting, analyzing, interpreting, and presenting data.

Variables

Elements or factors that can change and affect the outcome of a study or experiment, classified into different types such as independent, dependent, and control variables.

Five-factor Model

A framework identifying five major dimensions of human personality: openness, conscientiousness, extraversion, agreeableness, and neuroticism.