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 A bird sitting on a high tension electric wire does not get electrocuted because It does not form a closed path for the flow of current It has high resistance The body is earthed Its feet are good insulators It does not form a closed path for the flow of current It has high resistance The body is earthed Its feet are good insulators ANSWER DOWNLOAD EXAMIANS APP
Physics Pipelines in cold countries often burst in winter, because Pipelines expand due to freezing Water freezes and expands in its volume Temperature of ice is less than that of water Pipelines contract in their volume Pipelines expand due to freezing Water freezes and expands in its volume Temperature of ice is less than that of water Pipelines contract in their volume ANSWER DOWNLOAD EXAMIANS APP
Physics Instrument for measuring blueness of the sky or ocean is called ________ Ceraunograph Cyanometer Bathymeter Barometer Ceraunograph Cyanometer Bathymeter Barometer ANSWER DOWNLOAD EXAMIANS APP
Physics Kirchoff's Voltage Law is known as Conservation of Charge Conservation Energy None of these Both Conservation of Charge Conservation Energy None of these Both ANSWER DOWNLOAD EXAMIANS APP
Physics Kepler's law of planetary motion states that the square of the time period is proportional to the Fourth power of the semi-major axis Cube of the semi-major axis Square of the semi-major axis Semi-major axis Fourth power of the semi-major axis Cube of the semi-major axis Square of the semi-major axis Semi-major axis ANSWER DOWNLOAD EXAMIANS APP
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