dear XPF i have read in my physics book(Physics matters) that when u put magnet from north pole in the coil galvanometer shows a momentary left deflection however in redspot pastpapers and Classified physics its written that galvanometer will show right deflection when magnet is inserted from north pole 


And plzz,can anyone give me notes of Radioactivity (my book doesnot have that topic
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And plzz,can anyone give me notes of Radioactivity (my book doesnot have that topic