Bio-Physics (M.Phil./Ph.D.) 2014 Panjab University Entrance Exam With Answers

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12.

When an external magnetic field is applied, what happens to the protons in a sample ?

A: All protons align with the field.
B: All protons align opposite to the field.
C: Some protons align with and some align opposite to it.
D: All protons assume a random orientation

The answer is: C

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