(a) Why are anode rays called canal rays? (b) Mention two postulates of J.J Thomson's model. (c) Compare the properties of protons and electrons


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(a) The anode rays produced at the anode of the discharge tube are called canal rays because they pass through the holes of the cathode.
(b) (i) Atom consists of positively charged sphere and electrons are embedded in it. (ii) The negative and positive charges are equal in magnitude.