Physics In the atmosphere ultraviolet rays are absorbed by Oxygen Helium Nitrogen Ozone Oxygen Helium Nitrogen Ozone ANSWER DOWNLOAD EXAMIANS APP
Physics If a copper wire is increased to double its length, its resistance will become One–fourth Double Half Four times One–fourth Double Half Four times ANSWER DOWNLOAD EXAMIANS APP
Physics Conversion of sound energy into electrical energy is done by Solar cell Gramophone Loudspeaker Microphone Solar cell Gramophone Loudspeaker Microphone ANSWER DOWNLOAD EXAMIANS APP
Physics Why are we able to hear short wave broadcasts better than long wave broadcasts ? By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. Short waves are unaffected by atmospheric disturbances. Short wave broadcasts are made by nearby radio stations. Short waves are more energetic than long waves. By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. Short waves are unaffected by atmospheric disturbances. Short wave broadcasts are made by nearby radio stations. Short waves are more energetic than long waves. ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following principle is used to produce ''low-temperatures' ? Super conductivity Joule-Kelvin effect Adiabatic demagnetisation Thermo-electric effect Super conductivity Joule-Kelvin effect Adiabatic demagnetisation Thermo-electric effect ANSWER DOWNLOAD EXAMIANS APP
Physics At low temperature, Lead behaves as a : Insulator Conductor Superconductor Semi conductor Insulator Conductor Superconductor Semi conductor ANSWER DOWNLOAD EXAMIANS APP
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