NDA GK Previous Papers Chapterwise MCQs - Waves — Flashcards | Defence Exams in India | FatSkills

NDA GK Previous Papers Chapterwise MCQs - Waves — Flashcards

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The turntable of a gramophone is rotated at a constant speed of x revolutions/minute. Which one of the following values of the revolutions per minute is not used ?
56 r.p.m.
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