Question

1. The figure below shows the path of a radiation from a radioactive source moving in a magnetic field perpendicular
   
   Identify the radiation.  
2. Below is a nuclear equation for a fission process resulting from reaction on a neutron with a uranium nucleus.
   
   Determine the values of X and Y.
   X         
   Y    
3. Define the term half-life as used in radioactivity.  

Answer 1

1. Using Fleming's left hand rule
   Alpha α
2. X-36
   Y-3
3. Time taken for half the number of nuclides initially present in a radioactive sample to decay