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 radiation only Conduction, convection and radiation Conduction and convection only Convection and radiation only Conduction and radiation only Conduction, convection and radiation Conduction and convection only Convection and radiation only ANSWER DOWNLOAD EXAMIANS APP
Physics Stars twinkle because None of these the refractive index of the different layers of the earth's atmosphere ch the intensity of light emitted by them changes with time. the distance of the stars from the earth changes with time. None of these the refractive index of the different layers of the earth's atmosphere ch the intensity of light emitted by them changes with time. the distance of the stars from the earth changes with time. ANSWER DOWNLOAD EXAMIANS APP
Physics Electric power is measured in units of Volt Watt Joule Ampere Volt Watt Joule Ampere ANSWER DOWNLOAD EXAMIANS APP
Physics Which one type of radiation has the longest wave length Radio Wave Infrared X-ray Ultraviolet Radio Wave Infrared X-ray Ultraviolet ANSWER DOWNLOAD EXAMIANS APP
Physics Where does hydroelectric energy come from? Solar All of these Air Water Solar All of these Air Water ANSWER DOWNLOAD EXAMIANS APP
Physics What is the wavelength of visible spectrum ? 3900 A° – 7600 A° 7800 A° – 8000 A° 1300 A°–3000 A° 8500 A° – 9800 A° 3900 A° – 7600 A° 7800 A° – 8000 A° 1300 A°–3000 A° 8500 A° – 9800 A° ANSWER DOWNLOAD EXAMIANS APP
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