Physics Which of the following principle is used to produce ''low-temperatures' ? Joule-Kelvin effect Thermo-electric effect Adiabatic demagnetisation Super conductivity Joule-Kelvin effect Thermo-electric effect Adiabatic demagnetisation Super conductivity ANSWER DOWNLOAD EXAMIANS APP
Physics The first law of thermodynamics is simply the case of Newton's law of cooling The law of heat exchange Charle's law The law of conservation of energy Newton's law of cooling The law of heat exchange Charle's law The law of conservation of energy ANSWER DOWNLOAD EXAMIANS APP
Physics The commonly used coolant in refrigerators is Freon Ammonia Oxygen Nitrogen Freon Ammonia Oxygen Nitrogen 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 Increases with the increase in angle Does not depends on the angle of incidence Becomes maximum for angle of incidence equal to 45° Decreases with the increase in angle of incidence Increases with the increase in angle Does not depends on the angle of incidence ANSWER DOWNLOAD EXAMIANS APP
Physics Conservation of energy refers to the fact that 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 Energy cannot be created or destroyed but can be converted from one form to another The entropy of the universe is always increasing ANSWER DOWNLOAD EXAMIANS APP
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