The Energy Gap Between the Valence and Conduction Bands in a Certain

question 35

Multiple Choice

The energy gap between the valence and conduction bands in a certain semiconductor is 1.25 eV. What is the threshold wavelength for optical absorption in this substance?

• A)599 nm
• B)639 nm
• C)959 nm
• D)873 nm
• E)995 nm

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Definitions:

Anxiousness

An emotion of concern, apprehension, or discomfort regarding an event whose result is not yet known.

Obsessive-compulsive Personality Disorder

A personality disorder characterized by preoccupation with orderliness, perfectionism, and control, at the expense of flexibility, openness, and efficiency.

Obsessively Clean

Refers to an extreme focus on cleanliness and orderliness, often beyond what is considered normal or healthy.

DSM-5

The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, is a manual published by the American Psychiatric Association that provides a standardized language and criteria for the classification of mental disorders.