Physics Every hot object emits ________ Infrared rays Ultraviolet rays Visible light X–rays Infrared rays Ultraviolet rays Visible light X–rays ANSWER DOWNLOAD EXAMIANS APP
Physics The electrical domestic tube light gives white fluorescent light because of Heavy current Colision between molecules of filled gas under electric current Falling of ultra violet rays on the white inner coating of the tube Vacuum inside the tube Heavy current Colision between molecules of filled gas under electric current Falling of ultra violet rays on the white inner coating of the tube Vacuum inside the tube ANSWER DOWNLOAD EXAMIANS APP
Physics Lakes freeze in cold countries in winter, leaving the water underneath at 4°F 0°C 4°C 0°F 4°F 0°C 4°C 0°F ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not a part of a CRT ? Electron gun Phosphor screen Shadow mask Gas plasma Electron gun Phosphor screen Shadow mask Gas plasma ANSWER DOWNLOAD EXAMIANS APP
Physics Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: Intense sunlight at noon The heating effect of current alone Both the heating effect of current and hysteresis loss Hysteresis loss alone Intense sunlight at noon The heating effect of current alone Both the heating effect of current and hysteresis loss Hysteresis loss alone ANSWER DOWNLOAD EXAMIANS APP
Physics Suitable impurities are added to a semiconductor depending on its use. This is done in order to increase its life increase its electrical resistivity increase its electrical conductivity enable it to withstand higher voltages increase its life increase its electrical resistivity increase its electrical conductivity enable it to withstand higher voltages ANSWER DOWNLOAD EXAMIANS APP
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