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Question


Discovery of which amongst the following rays led to the discovery of proton?


Options:
A .   Magnetic rays
B .   Cathode rays
C .   Canal rays
D .   Electromagnetic rays
Answer: Option C
:
C

Eugen Goldstein in 1886 discovered the presence of positively charged rays in a gas discharge tube. He called these rays as canal rays. This experiment led to the discovery of protons. 



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