Physics Which of the following principle is used to produce ''low-temperatures' ? Super conductivity Adiabatic demagnetisation Thermo-electric effect Joule-Kelvin effect Super conductivity Adiabatic demagnetisation Thermo-electric effect Joule-Kelvin effect ANSWER DOWNLOAD EXAMIANS APP
Physics The first law of thermodynamics is simply the case of The law of heat exchange The law of conservation of energy Newton's law of cooling Charle's law The law of heat exchange The law of conservation of energy Newton's law of cooling Charle's law ANSWER DOWNLOAD EXAMIANS APP
Physics The commonly used coolant in refrigerators is Freon Oxygen Nitrogen Ammonia Freon Oxygen Nitrogen Ammonia ANSWER DOWNLOAD EXAMIANS APP
Physics Energy in reflected light : Increases with the increase in angle Does not depends on the angle of incidence Decreases with the increase in angle of incidence Becomes maximum for angle of incidence equal to 45° Increases with the increase in angle Does not depends on the angle of incidence Decreases with the increase in angle of incidence Becomes maximum for angle of incidence equal to 45° ANSWER DOWNLOAD EXAMIANS APP
Physics Conservation of energy refers to the fact that Energy cannot be created or destroyed but can be converted from one form to another The entropy of the universe is always increasing If you conserve energy you will not be as tired No chemical reaction is 100 percent efficient Energy cannot be created or destroyed but can be converted from one form to another The entropy of the universe is always increasing If you conserve energy you will not be as tired No chemical reaction is 100 percent efficient ANSWER DOWNLOAD EXAMIANS APP
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