It is observed that when ultraviolet light is shone onto a clean zinc plate connected to the cap of negatively charged leaf electroscope, the leaf collapses

      

It is observed that when ultraviolet light is shone onto a clean zinc plate connected to the cap of negatively charged leaf electroscope, the leaf collapses. Explain this observation

  

Answers


John
Ultra violet release electrons from zinc plate leaving it positively charged. These positive charge neutralizes the electrons on the electroscope.
johnmulu answered the question on February 20, 2017 at 10:09


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