2. The diagrams A, B and C represents the interaction of matter with radiation. The radiation is incident to matter in each case, study the diagram and answer the questions that follow. Incndent radlatlon BT B (a) On each case identify the phenomenon depicted by the diagram and write a brief A note about the phenomenon shown. (In your description focus on: what it is? how it caused?) [3 x 3] (b) Radiation can be classified as ionizing or non-ionizing, for each give two examples of each type. [2x 2] (c) Identify the radioactive nuclides that are associated with nuclear blast reactions [2] (d) The specific activity of a sample is given by : S.A = AN,. (Dsi/gram) (i) Identify what each symbol represent in the formula: A and No . [1x 2] (i) If A =0.693/t1,2, N, = 6.02 x 1022 /mol 1 curie = 3.7 x 1010 Dsi. Mass of nuclide A g/mol Show that the specific activity of a sample in curie/gram is equal to: S.A=1.13 x 1013/t;;2x A (ci/gram). [5] (iti) Calculate the specific activity of Pu-239 in ci/gram, given that the half-life is 24,400 years. [5]