When a Certain Metal Is Illuminated by Light,photoelectrons Are Observed

question 25

Multiple Choice

When a certain metal is illuminated by light,photoelectrons are observed provided that the wavelength of the light is less than 669 nm.Which one of the following values is closest to the work function of this metal? (h = 6.626 × 10^-34 J ∙ s,c = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10^-19 J)

• A)1.9 eV
• B)2.0 eV
• C)2.2 eV
• D)2.3 eV

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Definitions:

Minority Opinions

Views or beliefs that are held by a smaller segment of a group, contrasting with the majority viewpoint.

Carefully Processed

Pertaining to information or data that has been meticulously examined or considered with attention to detail and accuracy.

Distinctive

Having a unique quality or characteristic that sets someone or something apart from others.

Conversion Theory

A theory in social psychology that suggests minority group members can influence the majority through consistency, self-confidence, and defection from the majority.