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 convection only Conduction and radiation only Convection and radiation only Conduction, convection and radiation Conduction and convection only Conduction and radiation only Convection and radiation only ANSWER DOWNLOAD EXAMIANS APP
Physics Carbon Arc lamps are commonly used in Domestic lighting Photography Vehicles Cinema projectors Domestic lighting Photography Vehicles Cinema projectors ANSWER DOWNLOAD EXAMIANS APP
Physics If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to ________. 3 m 0.3 m 300 m 30 m 3 m 0.3 m 300 m 30 m ANSWER DOWNLOAD EXAMIANS APP
Physics Intensity of any wave is proportional to which of the following? Square of amplitude Amplitude Square root of amplitude Cube of amplitude Square of amplitude Amplitude Square root of amplitude Cube of amplitude ANSWER DOWNLOAD EXAMIANS APP
Physics Frictional force acts in All the directions The same direction as the motion The opposite direction of the motion Upward direction All the directions The same direction as the motion The opposite direction of the motion Upward direction ANSWER DOWNLOAD EXAMIANS APP
Physics In a diesel engine the high temperature needed to ignite the fuel is achieved by The battery Compressing air in the cylinders An electrical spark Using heat from exhaust The battery Compressing air in the cylinders An electrical spark Using heat from exhaust ANSWER DOWNLOAD EXAMIANS APP
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