Question Detail
Question
The primary function of a cathode ray tube (CRT) in the context of an electrical signal is to convert it into what?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The document states: 'The function of such cathode ray tube in this case is the conversion of an electrical signal into a visual display.'
Hint
Consider what CRTs were commonly used for, especially in older televisions and monitors.