What Is the Photon Energy of Red Light Having a Wavelength

question 29

Multiple Choice

What is the photon energy of red light having a wavelength of 6.40 × 10² nm? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s)

• A)1.13 × 10^-19 J
• B)1.31 × 10^-19 J
• C)3.11 × 10^-19 J
• D)1.94 × 10^-19 J

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Definitions:

Critical Incidents Method

A performance appraisal method focusing on the most significant actions of an employee, either positively or negatively impacting their job effectiveness.

Graphic Rating Scale

A method used in performance evaluations that involves marking an employee's level of performance on a chart with predefined categories.

Essay Method

A performance appraisal technique where evaluators write a narrative description of an employee's strengths, weaknesses, and potential.

Behaviourally Anchored Rating Scale

A performance appraisal method that uses specific examples of behavior to rate employees, making the evaluation more objective and transparent.