Work function of oxide coated cathode is much lower than that of tungsten cathode. ?->(Show Answer!)

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1. Work function of oxide coated cathode is much lower than that of tungsten cathode.

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MCQ->Work function of oxide coated cathode is much lower than that of tungsten cathode.....

MCQ->Assertion (A): Oxide coated cathodes are very commonly used. Reason (R): Work function of oxide coated cathode is 1 eV whereas it is 4.5 eV for pure tungsten.

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