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 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 ANSWER DOWNLOAD EXAMIANS APP
Physics Fibre optics work on the principle of Optical rotation Scattering of light Total internal absorption Total internal reflection Optical rotation Scattering of light Total internal absorption Total internal reflection ANSWER DOWNLOAD EXAMIANS APP
Physics Who was the first scientist to discover Electrons? Albert Einstein J.J Thompson Isaac Newton J.C. Bose Albert Einstein J.J Thompson Isaac Newton J.C. Bose ANSWER DOWNLOAD EXAMIANS APP
Physics If a body moves with a constant speed in a circle Its velocity remains constant No work is done on it No force acts on it No acceleration is produced in it Its velocity remains constant No work is done on it No force acts on it No acceleration is produced in it ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on the principle of refraction total internal reflection interference scattering principle of refraction total internal reflection interference scattering ANSWER DOWNLOAD EXAMIANS APP
Physics Which results in an increase in power? Doing more work in more time. Doing less work in less time. Doing less work in more time. Doing more work in less time. Doing more work in more time. Doing less work in less time. Doing less work in more time. Doing more work in less time. ANSWER DOWNLOAD EXAMIANS APP
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