div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: IGCSE PHYSICS 20 - RADIOACTIVITYigcsestudybankweeblycomigcse_physics_20_-_radioactivity_001pdf · to decay is called the half-life The activity of a radioactive source src=https:reader033vdocumentinreader033viewer20220414165e1be5335db98f61da602d7dhtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: IGCSE PHYSICS 20 - RADIOACTIVITYigcsestudybankweeblycomigcse_physics_20_-_radioactivity_001pdf · to decay is called the half-life The activity of a radioactive source src=https:reader033vdocumentinreader033viewer20220414165e1be5335db98f61da602d7dhtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: IGCSE PHYSICS 20 - RADIOACTIVITYigcsestudybankweeblycomigcse_physics_20_-_radioactivity_001pdf · to decay is called the half-life The activity of a radioactive source src=https:reader033vdocumentinreader033viewer20220414165e1be5335db98f61da602d7dhtml5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: IGCSE PHYSICS 20 - RADIOACTIVITYigcsestudybankweeblycomigcse_physics_20_-_radioactivity_001pdf · to decay is called the half-life The activity of a radioactive source src=https:reader033vdocumentinreader033viewer20220414165e1be5335db98f61da602d7dhtml5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdiv