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Q. If the frequency of a sound wave is reduced to half of its original value, then the speed of sound wave will:
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Q. In house wiring which type of insulation is used ?
Q. Who was the first scientist to discover Electrons?
Q. Green house effect is the heating up of the Earth's atmosphere which is due to
Q. Which of the following is an insulator?
Q. Who among the following coined the term ―cosmic rays‖ ?
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