In dc operation of fluorescent tube, the life of the tube :

(a) increases by about 80% as that with ac operation
(b) decreases by about 80% as that with ac operation
(c) remain same
(d) may increase or decrease

Anurag Mishra Professor Asked on 1st February 2016 in Physics.
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    Answer: (b) decreases by about 80% as that with ac operation 

    Anurag Mishra Professor Answered on 21st May 2016.
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