Physics Lens is made up of Pyrex glass Flint glass Cobalt glass Ordinary glass Pyrex glass Flint glass Cobalt glass Ordinary glass ANSWER DOWNLOAD EXAMIANS APP
Physics Superconductors are those elements Whose conductivity is intermediate between metals and insulators Which turn into insulators at very low temperatures Which conduct electricity only at super-high temperatures Whose resistance falls almost to zero at very low temperatures Whose conductivity is intermediate between metals and insulators Which turn into insulators at very low temperatures Which conduct electricity only at super-high temperatures Whose resistance falls almost to zero at very low temperatures 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 The rubber ball suffers greater change in momentum Both suffer the same 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 The rubber ball suffers greater change in momentum Both suffer the same change in momentum ANSWER DOWNLOAD EXAMIANS APP
Physics A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will Have its shape changed Increase Decrease Remain unaffected Have its shape changed Increase Decrease Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Physics What is the unit of the physical quantity Entropy? Watt per kelvin Newton per kelvin Joule per kelvin Pascal per kelvin Watt per kelvin Newton per kelvin Joule per kelvin Pascal per kelvin ANSWER DOWNLOAD EXAMIANS APP
Physics Certain substances loose their electrical resistance completely at super low temperature. Such substances are called. Superconductors Dielectrics Perfect conductors Semi conductors Superconductors Dielectrics Perfect conductors Semi conductors ANSWER DOWNLOAD EXAMIANS APP
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