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
Physics Which one of the following is a non-dimensional quantity? Strain Plank's constant Gas constant Co-efficient of viscocity Strain Plank's constant Gas constant Co-efficient of viscocity ANSWER DOWNLOAD EXAMIANS APP
Physics The audio signals of TV are Unmodulated Amplitude modulated Frequency modulated Velocity modulated Unmodulated Amplitude modulated Frequency modulated Velocity modulated ANSWER DOWNLOAD EXAMIANS APP
Physics The least penetrating power ray is Beta rays None of these Gamma rays Alpha rays Beta rays None of these Gamma rays Alpha rays ANSWER DOWNLOAD EXAMIANS APP
Physics Who is the first person to define speed Galileo Newton Ptolemy Kepler Galileo Newton Ptolemy Kepler 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 : Plastics have a lower density than metals Metals are good conductors of heat Plastics have a higher thermal conductivity than metals Metals have higher thermal capacity than plastics Plastics have a lower density than metals Metals are good conductors of heat Plastics have a higher thermal conductivity than metals Metals have higher thermal capacity than plastics ANSWER DOWNLOAD EXAMIANS APP
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