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Which is correct statement about proton:
(1)Proton is nucleus of deuterium
(2)Proton is ionized hydrogen molecule
(3)Proton is ionized hydrogen atom
(4)Proton is alfa -particle
Ans: (3)Proton is ionized hydrogen atom
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It is defined as the magnetic lines of force per unit area of the pole face. B=φ/A where φ is the magnetic lines of f
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