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