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Q. Suitable impurities are added to a semiconductor depending on its use. This is done in order to
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Q. The S. I. unit of refractive index is
Q. The pitch (or shrillness) of sound is determined by its
Q. Least audible sound for most of the human ear is :
Q. Endothermic reactions are those in which
Q. The operation of the electric generator and motor is based on the interaction between
Q. The speed of light in water is ¾ of that in air. What is the refractive index of water...
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