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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

The xerographic (dry writing) process was invented in 1938 by C. Carlson. In xerography, an image is produced on a photoconductor by exposing it to light. Selenium is commonly used, since its conductivity increases three orders of magnitude upon exposure to light in the range from 400 to 500 nm. What color light should be used to cause selenium to become conductive? (See Figure 2-2.)

Interpretation Introduction

Interpretation: The wavelength range of light at which selenium is exposed is given. The color of the light that should be used to make selenium conductive is to be identified.

Concept introduction: The range of visible light is 400nm to 750nm . It contains violet, blue, green, yellow, indigo, white and red color.

To determine: The color of the light that should be used to make selenium conductive.

Explanation

Explanation

The wavelength range of light at which selenium is exposed is 400nm to

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