Physics Copper wires are generally used for electrical power transmission instead of iron wire because : Copper is lighter than iron Copper is a better conductor of electricity than iron Copper is cheaper than iron Copper can take higher power than iron Copper is lighter than iron Copper is a better conductor of electricity than iron Copper is cheaper than iron Copper can take higher power than iron ANSWER DOWNLOAD EXAMIANS APP
Physics Red light is used for signals because it has High intensity High frequency Low refraction in the medium Long wavelength High intensity High frequency Low refraction in the medium Long wavelength 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 metal ball suffers greater 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 Both suffer the same change in momentum The metal ball suffers greater 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 Both suffer the same change in momentum ANSWER DOWNLOAD EXAMIANS APP
Physics A solid needle placed horizontally on the surface of the water floats due to Surface tension of water Capillary action Water pressure Viscosity of water Surface tension of water Capillary action Water pressure Viscosity of water ANSWER DOWNLOAD EXAMIANS APP
Physics It is difficult to cook rice At the top of a mountain Same anywhere Under a mine At the sea level At the top of a mountain Same anywhere Under a mine At the sea level ANSWER DOWNLOAD EXAMIANS APP
Physics To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor Can be of any shape Should be made of a good conductor like copper with sharp-pointed edges Should be in the form of a vertical rod Should be made of a good conductor but can be of any shape Can be of any shape Should be made of a good conductor like copper with sharp-pointed edges Should be in the form of a vertical rod Should be made of a good conductor but can be of any shape ANSWER DOWNLOAD EXAMIANS APP
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