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Q. Instrument used to measure the force and velocity of the wind is
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Q. Which one among the following is not an electromagnetic wave?
Q. A vehicle moving on a circular path experiences ________?
Q. Radio telescopes are better than optical telescopes because
Q. Which of these travels in glass with minimum velocity ?
Q. A flat mirror has a minimum height to see a full reflection of a person.
Q. Vegetables are cooked in lesser time by adding a pinch of salt while cooking because
Q. Which of these is true of all simple machines?
Q. The efficiency of a transformer is usually of the order of
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