A Metal Having a Work Function of 2

question 29

Multiple Choice

A metal having a work function of 2.4 eV is illuminated with monochromatic light whose photon energy is 4.0 eV. What is the maximum kinetic energy of the photoelectrons produced by this light? (h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

• A) 2.6 × 10^-19 J
• B) 3.8 × 10^-19 J
• C) 4.7 × 10^-19 J
• D) 5.5 × 10^-19 J
• E) 6.4 × 10^-19 J

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Definitions:

Feature Detector

Neurons in the brain that are responsible for detecting specific features of the environment, such as lines, edges, or movement.

Visual System

The part of the central nervous system which enables organisms to process visual detail, as well as enabling several photo response functions.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell, which is the basic building block of the nervous system.

Feature Detector

A type of neuron in the brain that responds to specific attributes of a stimulus, such as angles or edges in vision.