Physics Which of the following principle is used to produce ''low-temperatures' ? Adiabatic demagnetisation Thermo-electric effect Joule-Kelvin effect Super conductivity Adiabatic demagnetisation Thermo-electric effect Joule-Kelvin effect Super conductivity ANSWER DOWNLOAD EXAMIANS APP
Physics X–rays are Negatively charged particles Neutral particles None of these Positively charged particles Negatively charged particles Neutral particles None of these Positively charged particles ANSWER DOWNLOAD EXAMIANS APP
Physics Increased wind speed is accompanied by a reduced air ________ Density Aridity Humidity Pressure Density Aridity Humidity Pressure ANSWER DOWNLOAD EXAMIANS APP
Physics The wave of theory of light is based on Huyghens' principle The laws of refraction The laws of reflection The inverse square law Huyghens' principle The laws of refraction The laws of reflection The inverse square law ANSWER DOWNLOAD EXAMIANS APP
Physics The velocity of sound in moist air is more than in dry air because the moist air has More pressure than dry air. Less pressure than dry air. More density than dry air. Less density than dry air. More pressure than dry air. Less pressure than dry air. More density than dry air. Less density than dry air. ANSWER DOWNLOAD EXAMIANS APP
Physics Two vectors are said to be equal if Only their directions are same Magnitudes are same but directions are opposite Only their magnitudes are same Both magnitude and direction are same Only their directions are same Magnitudes are same but directions are opposite Only their magnitudes are same Both magnitude and direction are same ANSWER DOWNLOAD EXAMIANS APP
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