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

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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