UPSC CDS Previous Papers 2018 (I) General Knowledge - Bilingual — Flashcards | Defence Exams in India | FatSkills

UPSC CDS Previous Papers 2018 (I) General Knowledge - Bilingual — Flashcards

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Which one of the following elements is used as a timekeeper in atomic clocks? परमाण्वीय घड़ियों में एक टाइमकीपर के रूप में प्रयुक्त होने वाला तत्व‚ निम्नलिखित में से कौन-सा है?
Caesium/सीजियम
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