Physics Which of the following features of a tunnel diode is its drawback Instability due to negative resistance Extremely high frequency response Very low power consumptions Very wide temperature range of operations Instability due to negative resistance Extremely high frequency response Very low power consumptions Very wide temperature range of operations ANSWER DOWNLOAD EXAMIANS APP
Physics Superconductors are those elements Which conduct electricity only at super-high temperatures Whose conductivity is intermediate between metals and insulators Whose resistance falls almost to zero at very low temperatures Which turn into insulators at very low temperatures Which conduct electricity only at super-high temperatures Whose conductivity is intermediate between metals and insulators Whose resistance falls almost to zero at very low temperatures Which turn into insulators at very low temperatures ANSWER DOWNLOAD EXAMIANS APP
Physics These waves cannot be transmitted through vacuum. Heat Light Electromagnetic Sound Heat Light Electromagnetic Sound ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these waves can be polarized ? Sound waves in air Longitudinal waves on a string Light waves Transverse waves on a string Sound waves in air Longitudinal waves on a string Light waves Transverse waves on a string 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 higher thermal conductivity than metals Metals have higher thermal capacity than plastics Metals are good conductors of heat Plastics have a lower density than metals Plastics have a higher thermal conductivity than metals Metals have higher thermal capacity than plastics Metals are good conductors of heat Plastics have a lower density than metals ANSWER DOWNLOAD EXAMIANS APP
Physics The device used to convert solar energy into electricity is Daniell cell Photovoltaic cell Galvanic cell Electrochemical cell Daniell cell Photovoltaic cell Galvanic cell Electrochemical cell ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS