Physics A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat? Conduction, convection and radiation Conduction and radiation only Conduction and convection only Convection and radiation only Conduction, convection and radiation Conduction and radiation only Conduction and convection only Convection and radiation only ANSWER DOWNLOAD EXAMIANS APP
Physics Solids which conduct electricity at higher temperature but not at lower temperature are called Super-conductor Insulator Semi-conductor Metallic-conductor Super-conductor Insulator Semi-conductor Metallic-conductor ANSWER DOWNLOAD EXAMIANS APP
Physics The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ? 8.5 A 24 A 0.41666666666667 8.5 A 24 A 0.41666666666667 ANSWER DOWNLOAD EXAMIANS APP
Physics Tungsten is used for the manufacture of the filament of an electric bulb, because It is a good conductor It is economical It has a very high melting point It is malleable It is a good conductor It is economical It has a very high melting point It is malleable ANSWER DOWNLOAD EXAMIANS APP
Physics The unit for measuring electric power is the Steridian Watts Watts Volts Steridian Watts Watts Volts ANSWER DOWNLOAD EXAMIANS APP
Physics At the center of the sun, fusion converts hydrogen into Plutonium Carbon Water Helium Plutonium Carbon Water Helium ANSWER DOWNLOAD EXAMIANS APP
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