Physics Radiocarbon is produced in the atmosphere as a result of Lightning discharge in atmosphere. Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Lightning discharge in atmosphere. Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. ANSWER DOWNLOAD EXAMIANS APP
Physics Total internal reflection can not take place when light goes from : Glass to water Glass to air Water to air Water to glass Glass to water Glass to air Water to air Water to glass ANSWER DOWNLOAD EXAMIANS APP
Physics The layer of atmosphere used for radio-wave transmission is Chromosphere Troposphere Stratosphere Ionosphere Chromosphere Troposphere Stratosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Physics Speed regulation of synchronous motor is 0.005 Zero 0.25 0.01 0.005 Zero 0.25 0.01 ANSWER DOWNLOAD EXAMIANS APP
Physics Brightness of bulb depends on voltage or current? None Current Both A & B Voltage None Current Both A & B Voltage ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these waves can be polarized ? Sound waves in air Light waves Longitudinal waves on a string Transverse waves on a string Sound waves in air Light waves Longitudinal waves on a string Transverse waves on a string ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS