1.

Given below is the diagram of evacuated glass tube of photo emissive tube. Identify the part which is indicated with a question mark.(a) Anode(b) Cathode(c) Grid(d) DynodeThis question was addressed to me in an interview for internship.This is a very interesting question from Flame Emission Photometers in division Colorimetry and Spectrometry of Analytical Instrumentation

Answer»

The correct choice is (b) CATHODE

Best explanation: The cathode is formed of half CYLINDER. The anode is a metal RING near the centre of the glass.



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