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? Convection and radiation only 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 ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following principle is used to produce ''low-temperatures' ? Adiabatic demagnetisation Super conductivity Joule-Kelvin effect Thermo-electric effect Adiabatic demagnetisation Super conductivity Joule-Kelvin effect Thermo-electric effect ANSWER DOWNLOAD EXAMIANS APP
Physics What is the minimum distance (in metres) required to hear an echo? 17 10 21 13 17 10 21 13 ANSWER DOWNLOAD EXAMIANS APP
Physics Pipelines in cold countries often burst in winter, because Temperature of ice is less than that of water Pipelines contract in their volume Pipelines expand due to freezing Water freezes and expands in its volume Temperature of ice is less than that of water Pipelines contract in their volume Pipelines expand due to freezing Water freezes and expands in its volume ANSWER DOWNLOAD EXAMIANS APP
Physics Electricity is transmitted over long distances It is cheaper It is fast There is less wastage of energy It is safer It is cheaper It is fast There is less wastage of energy It is safer ANSWER DOWNLOAD EXAMIANS APP
Physics Choose the most appropriate answer: Sir CV Raman was awarded Noble Prize for his work connected with which of the following phenomenon of radiation? Diffraction Polarization Interference Scattering Diffraction Polarization Interference Scattering ANSWER DOWNLOAD EXAMIANS APP
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