Physics The best material for the core of a transformer is Stainless steel Hard steel Mild steel Soft iron Stainless steel Hard steel Mild steel Soft iron ANSWER DOWNLOAD EXAMIANS APP
Physics If a body moves with a constant speed in a circle Its velocity remains constant No work is done on it No acceleration is produced in it No force acts on it Its velocity remains constant No work is done on it No acceleration is produced in it No force acts on it ANSWER DOWNLOAD EXAMIANS APP
Physics The impurity atoms with which silicon should be doped to make p-type semiconductors are Phosphorus Antimony Germanium Boron Phosphorus Antimony Germanium Boron ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibres are based on the phenomenon of Diffraction Dispersion Total Internal Reflection Interference Diffraction Dispersion Total Internal Reflection Interference ANSWER DOWNLOAD EXAMIANS APP
Physics A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that The initial momentum of the rubber ball is greater than that of the metal ball The metal ball suffers greater change in momentum Both suffer the same change in momentum The rubber ball suffers greater change in momentum The initial momentum of the rubber ball is greater than that of the metal ball The metal ball suffers greater change in momentum Both suffer the same change in momentum The rubber ball suffers greater change in momentum ANSWER DOWNLOAD EXAMIANS APP
Physics On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : Metals are good conductors of heat Metals have higher thermal capacity than plastics Plastics have a higher thermal conductivity than metals Plastics have a lower density than metals Metals are good conductors of heat Metals have higher thermal capacity than plastics Plastics have a higher thermal conductivity than metals Plastics have a lower density than metals ANSWER DOWNLOAD EXAMIANS APP
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