Physics Radiocarbon is produced in the atmosphere as a result of Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Lightning discharge in atmosphere. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Lightning discharge in atmosphere. ANSWER DOWNLOAD EXAMIANS APP
Physics Heat from the Sun reaches the Earth by Radiation Reflection Convection Conduction Radiation Reflection Convection Conduction ANSWER DOWNLOAD EXAMIANS APP
Physics By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance? 1012 102 1036 2 1012 102 1036 2 ANSWER DOWNLOAD EXAMIANS APP
Physics Natural radioactivity was discovered by Ernest Rutherfor Marie Curie Enrico Fermi Henri Becquerel Ernest Rutherfor Marie Curie Enrico Fermi Henri Becquerel ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following criterion is used for any metal to be used as a cooking material ? Less thermal conductivity More specific heat Less electrical conductivity More thermal conductivity Less thermal conductivity More specific heat Less electrical conductivity More thermal conductivity ANSWER DOWNLOAD EXAMIANS APP
Physics Sound waves cannot travel in Hydrogen gas Water Glass Vacuum Hydrogen gas Water Glass Vacuum ANSWER DOWNLOAD EXAMIANS APP