Figure 10 shows the main features of a cathode ray oscilloscope (CRO).

      

Figure 10 shows the main features of a cathode ray oscilloscope (CRO).
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(i) Name the part labeled M and N.
(ii) Explain how electrons are produced in the tube.
(iii) State why the tube is highly evacuated.

  

Answers


John
(i) M - Grid, N - Accelerating anode

(ii) The cathode is heated by filament and electrons are released from cathode by thermionic emission

(iii) This is to reduce collision, (hence ionization) with air molecules in the tube.

johnmulu answered the question on June 6, 2017 at 05:19


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