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Publish On: 2018-12-07

Steeb more

Total Post: 416

Question: Describe cathode rays

Reply On: 2014-01-07

lala singh

Total Post: 22

ANS: Describe cathode rays

At intermediate pressure, about 0.001 mm Hg, many of the positive ions will traverse nearly the whole length of the tube without collision and will strike the cathode with enough energy to cause it to emit a considerable number of electrons. These electrons stream away from the negatively charged cathode in directions at right angles to the surface. Such electrons are called cathode rays. Historically the study of their properties has yielded very returns.

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