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Q. Radioactivity is a phenomenon of the spontaneous emission of
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Q. A Step-Up transformer increases
Q. For photoelectric effect to take place, the metal used as the cathode should have ________
Q. Which one of the following would a hydrogen balloon find easiest to lift.
Q. Which scientist first melted two pieces of ice by rubbing them together?
Q. A series of fast moving still pictures can be made to appear as a moving picture because the eye
Q. Pitot tube is used to measure
Q. Which of the following substances has greatest specific heat?
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