Physics Copper wires are generally used for electrical power transmission instead of iron wire because : Copper can take higher power than iron Copper is a better conductor of electricity than iron Copper is cheaper than iron Copper is lighter than iron Copper can take higher power than iron Copper is a better conductor of electricity than iron Copper is cheaper than iron Copper is lighter than iron ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these waves can be polarized ? Sound waves in air Transverse waves on a string Longitudinal waves on a string Light waves Sound waves in air Transverse waves on a string Longitudinal waves on a string Light waves ANSWER DOWNLOAD EXAMIANS APP
Physics Red light is used for signals because it has Long wavelength Low refraction in the medium High intensity High frequency Long wavelength Low refraction in the medium High intensity High frequency ANSWER DOWNLOAD EXAMIANS APP
Physics The shape of our milky way galaxy is Spiral Circular None of these Elliptical Spiral Circular None of these Elliptical ANSWER DOWNLOAD EXAMIANS APP
Physics On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because metals are good conductor of heat plastics have a higher thermal conductivity than metals plastics have a lower density than metals metals have higher thermal capacity than plastics metals are good conductor of heat plastics have a higher thermal conductivity than metals plastics have a lower density than metals metals have higher thermal capacity than plastics ANSWER DOWNLOAD EXAMIANS APP
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