Question

Only those electrons which are in a selected small solid angle are received in the ________ electrostatic analyser.

(a) 100^o

(b) 127^o

(c) 180^o

(d) 263^o

I got this question by my school teacher while I was bunking the class.

I want to ask this question from Instrumentation of Ion Spectroscopy in section Electron and Ion Spectrometers of Analytical Instrumentation

Answer 1

Right answer is (b) 127^o

Explanation: Only those electrons which are in a selected small solid angle are received in the 127^o electrostatic analyser. Ions are scattered in all directions.