Q. Which of the following is a cold cathode lamp?

(A) Sodium vapour lamp
(B) High pressure mercury vapour lamp
(C) Low pressure mercury vapour lamp
(D) Neon lamp

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✅ Correct Answer: (D) Neon lamp

Published by Mr. Dubey ⭐ 111.54K Points at 19-Sep-2023 08:08 pm in Environmental Engineering

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