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

question 28

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,

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

---

Definitions:

Life Satisfaction

A measure of well-being and contentment with one's life as a whole, reflecting a personal assessment of conditions and achievements.

Objective Data

Information that is measurable, observable, and can be verified by others, not influenced by personal feelings or biases.

Glucostatic Theory

A theory suggesting that the body regulates blood glucose levels to maintain energy balance, influencing eating behavior.

Incentive Value

The attractiveness or desirability of a reward or outcome, influencing motivation and behavior.