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1. Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?
When placed in the path of the cathode rays, a light paddle wheel because the tiny particles of the cathode rays (electrons) have . This energy is used in rotating the paddle wheel.
2. How can we prove that the electrons carry negative charge?
found that cathode rays were attracted by the positively charged plate and repelled by the negatively charged plate. This led him to conclude that the (electrons) were made of negatively charged particles.
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