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Q. The efficiency of a transformer is usually of the order of
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Q. The unit of noise pollution (level) is:
Q. The velocity of sound is …. the density of the medium
Q. Who is the Chairman of the Rajya Sabha?
Q. A galvanometer can be converted to a voltmeter by connecting
Q. Which among the given are used for accurately measuring very small time intervals
Q. Which of the following is most elastic
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