Physics Bats can sense obstacles because they produce Infrasonic sound waves Supersonic sound waves Micro sound waves Ultrasonic sound waves Infrasonic sound waves Supersonic sound waves Micro sound waves Ultrasonic sound waves ANSWER DOWNLOAD EXAMIANS APP
Physics When a piece of pure silicon is doped with aluminium, then The doped silicon piece will become n-type The doped silicon piece will become p-type The conductivity of the doped silicon piece will remain the same The resistivity of the doped silicon piece will increase The doped silicon piece will become n-type The doped silicon piece will become p-type The conductivity of the doped silicon piece will remain the same The resistivity of the doped silicon piece will increase ANSWER DOWNLOAD EXAMIANS APP
Physics Who is the first person to define speed Ptolemy Newton Galileo Kepler Ptolemy Newton Galileo Kepler ANSWER DOWNLOAD EXAMIANS APP
Physics The basic reason for the extraordinary sparkle of suitably cut diamond is that It has a very high refractive index It is very hard It has well defined cleavage planes It has a very high transparency It has a very high refractive index It is very hard It has well defined cleavage planes It has a very high transparency 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 : Metals are good conductors of heat Plastics have a lower density than metals Metals have higher thermal capacity than plastics Plastics have a higher thermal conductivity than metals Metals are good conductors of heat Plastics have a lower density than metals Metals have higher thermal capacity than plastics Plastics have a higher thermal conductivity than metals ANSWER DOWNLOAD EXAMIANS APP
Physics Hydroscope is an instrument that shows changes in: Density of liquid None of these Atmospheric humidity Sound under water Density of liquid None of these Atmospheric humidity Sound under water ANSWER DOWNLOAD EXAMIANS APP
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