Physics When a piece of pure silicon is doped with aluminium, then The resistivity of the doped silicon piece will increase The conductivity of the doped silicon piece will remain the same The doped silicon piece will become p-type The doped silicon piece will become n-type The resistivity of the doped silicon piece will increase The conductivity of the doped silicon piece will remain the same The doped silicon piece will become p-type The doped silicon piece will become n-type ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following represents a relation for ''heat lost = heat gained'? Principle of calorimetry Principle of thermal equilibrium Principle of vaporization Principle of colors Principle of calorimetry Principle of thermal equilibrium Principle of vaporization Principle of colors ANSWER DOWNLOAD EXAMIANS APP
Physics A hydrogen balloon floats up because of Air pressure decreases with decrease in weight Weight of the balloon is less than the weight of air displaced by it. The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in height Air pressure decreases with decrease in weight Weight of the balloon is less than the weight of air displaced by it. The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in height ANSWER DOWNLOAD EXAMIANS APP
Physics The type of mirrors used in the headlamp of cars is Cylindrical concave Spherical convex Parabolic concave Plane Cylindrical concave Spherical convex Parabolic concave Plane ANSWER DOWNLOAD EXAMIANS APP
Physics What is the name of the device used to convert alternating current into direct current ? Transformer Galvanometer Ammeter Rectifier Transformer Galvanometer Ammeter Rectifier ANSWER DOWNLOAD EXAMIANS APP
Physics Which one among the following components is used as an amplifying device? Transistor Diode Transformer Capacitor Transistor Diode Transformer Capacitor ANSWER DOWNLOAD EXAMIANS APP
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