a. A negatively charged electroscope can be discharged by shining an ultraviolet light on it. How does
Question:
a. A negatively charged electroscope can be discharged by shining an ultraviolet light on it. How does this happen?
b. You might think that an ultraviolet light shining on an initially uncharged electroscope would cause the electroscope to become positively charged as photo-electrons are emitted. In fact, ultraviolet light has no noticeable effect on an uncharged electroscope. Why not?
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a The ultraviolet light consists of bundles of energy that are absorbed by t...View the full answer
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Related Book For 
Physics for Scientists and Engineers A Strategic Approach with Modern Physics
ISBN: 978-0133942651
4th edition
Authors: Randall D. Knight
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