MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryAtomic StructureIntro

The e/m ratio for anode rays (positive rays) in comparison to cathode rays is:

0.Very low

1.Very high

2.Same

3.None of these

Explanation

Cathode rays contain electrons (very light). Positive rays contain heavy gaseous ions. Since mass of positive ions >> mass of electron, e/m for anode rays is very low compared to cathode rays.

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