Physics
Radiocarbon is produced in the atmosphere as a result of

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.

ANSWER DOWNLOAD EXAMIANS APP

Physics
X-rays region lies between

Visible and infra-red region
Short radio waves and long radio waves
Gamma-rays and ultraviolet region
Ultraviolet and visible region

ANSWER DOWNLOAD EXAMIANS APP