Physics Association organized one day workshop on “Radioactivity & Nuclear Radiation Detection” on 30th March, 2017. This workshop was organized in collaboration with Indian Association of Nuclear Chemists and Allied Scientists (IANCAS) (Northern Chapter)). The main objective of this workshop was to enhance the knowledge of the students regarding the basics of nuclear radioactivity, types of ionizing radiation, radiation detection and their measurements. The exercises pertaining to the calculations of half-life and radiation dose were executed in the first-half of the workshop. In the second half, more emphasis was given on applications of ionizing radiation in industry and health care systems. Through this workshop, students were made aware of health risks from ionizing radiation and underlying methods for radiation safety.