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 and convection only Conduction, convection and radiation Conduction and radiation only Convection and radiation only Conduction and convection only Conduction, convection and radiation Conduction and radiation only Convection and radiation only ANSWER DOWNLOAD EXAMIANS APP
Physics Hot water is poured simultaneously in four metallic tumblers painted outside with different points. After some time the water will be found to have cooled most in the tumbler painted. Shining white Rough white Rough black Shining black Shining white Rough white Rough black Shining black ANSWER DOWNLOAD EXAMIANS APP
Physics The apparent weight of a man in a lift is less the real weight when : The lift is going down with an acceleration The lift is going down with uniform speed The lift is going up with uniform speed The lift is going up with an acceleration The lift is going down with an acceleration The lift is going down with uniform speed The lift is going up with uniform speed The lift is going up with an acceleration ANSWER DOWNLOAD EXAMIANS APP
Physics After long periods of use, a grey spot develops on the inside of a bulb. This is because The heat of the bulb scorches the glass at the top The tungsten filament evaporates and collects there Dust inside the bulb condenses on the top Glass undergoes a change due to the heat The heat of the bulb scorches the glass at the top The tungsten filament evaporates and collects there Dust inside the bulb condenses on the top Glass undergoes a change due to the heat ANSWER DOWNLOAD EXAMIANS APP
Physics Which, of the following radiations has the least wavelength ? G-rays A-rays B-rays X-rays G-rays A-rays B-rays X-rays ANSWER DOWNLOAD EXAMIANS APP
Physics In the remote control of television, electromagnetic waves used are Infrared Ultraviolet Radiowave Microwave Infrared Ultraviolet Radiowave Microwave ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS