Question 5: Define and explain half-life of a radioactive element. Answer Definition of the half-life of a radioactive substance Time during which half of the…
Question 6: Define and explain nuclear reaction? ANSWER Definition of nuclear reaction Nuclear reaction is defined as the change in the identity or characteristics of…
Question 9: What is meant by nuclear fusion? Discuss how can energy be released in the fusion process? Illustrate with examples. ANSWER Nuclear Fusion When…
Question 11: Discuss the technique and use of radioisotopes in the different fields of human activities. ANSWER Radioisotopes Isotopes of radioactive elements are called radioisotopes.…
Question 12: Write a comprehensive note on hadrons, leptons and quarks. ANSWER Initially, it was thought that atom was indivisible. However, the later evidences proved…
Question 13: What are harmful effects of radiations? What measures can be adopted to safeguard us from the nuclear hazard? ANSWER Unfortunately, we are continuously…
Question 14: Explain tracer technique in agriculture. ANSWER Tracer technique is useful in agriculture research as well. Suppose one wants to determine the best method…
Question 15: Name the four fundamental interactions and the particles that mediate each interaction. ANSWER Properties of elementary particles can be described by the interacting…
Question 16: Discuss the differences between hadrons and leptons. ANSWER Hadrons: Hadrons are those subatomic particles which interact using the strong nuclear force. Hadrons are…
Question 1: What is meant by natural radioactivity? How are the natural radioactive radiations classified into three types? ANSWER Natural Radioactivity The phenomena of spontaneous…