HYDROGEN BOMB

Out of two elements A and B with mass number 2 and 235 respectively. Which one is suitable for making. a) A nuclear reactor b) A hydrogen bomb Name the nuclear reaction involved in each case, write one difference between the two types of nuclear reactions.

In has been estimated that the total energy radiated by the sun is 3.8xx10^26 J per second. The source of energy of stars is a thermonuclear reaction called nuclear fusion. Fusion reactions are not controlled. It is presumed that the energy of stars is due to two processes called proton-proton cycle and carbon nitrogen cycle. Fusion cannot take place at ordinary temperature. This, hydrogen bomb uses a small fission bomb, which on explosion causes the temperature to rise very high about 10^7 K. We have yet to see how a hydrogen bomb can be used for peaceful life-sustaining purpose. Energy released in the process of fusion is due to mass defect. It is also called Q-value. Q =Deltamc^2 , Deltam= mass defect Answer the following questions based on above passage: Fusion reaction takes place at about:

(a) Differentiate between nuclear fission and nuclear fusion. (b) Which of the two, nuclear fission and nuclear fusion, is made use of : (i) for the production of electricity ? (ii) for making a hydrogen bomb ? (c ) Which produces more energy : nuclear fusion or nuclear fission ? (d) Calculate the energy released in joules when 5 g of a material is completely converted into energy during a nuclear reaction. (e) How much is this energy in MeV ? (Speed of light = 3 xx 10^(8) m//s )