Physics A bullet of mass 10gm is fired with a velocity of 40 m/s from a gun of mass 8 kg. Find the recoil velocity (in m/s) of the gun. 0.05 2 4 0.1 0.05 2 4 0.1 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 higher thermal conductivity than metals Metals have higher thermal capacity than plastics Plastics have a lower density than metals Metals are good conductors of heat Plastics have a higher thermal conductivity than metals Metals have higher thermal capacity than plastics Plastics have a lower density than metals ANSWER DOWNLOAD EXAMIANS APP
Physics Magnetic keepers are pieces of Nickel Steel Cobalt Soft iron Nickel Steel Cobalt Soft iron ANSWER DOWNLOAD EXAMIANS APP
Physics The sky appears blue due to None of these Rayleigh scattering Mie scattering Back scattering None of these Rayleigh scattering Mie scattering Back scattering ANSWER DOWNLOAD EXAMIANS APP
Physics Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: Hysteresis loss alone Both the heating effect of current and hysteresis loss The heating effect of current alone Intense sunlight at noon Hysteresis loss alone Both the heating effect of current and hysteresis loss The heating effect of current alone Intense sunlight at noon ANSWER DOWNLOAD EXAMIANS APP
Physics The instrument used to measure the speed of the wind is Altimeter Dosimeter Chronometer Anemometer Altimeter Dosimeter Chronometer Anemometer ANSWER DOWNLOAD EXAMIANS APP
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