Class 12

23. Magnetism And Matter question bank (Physics)

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Q1.

The primary origin of magnetism lies in  

(A)
Atomic current and intrinsic spin of electrons.
(B)
Polar and non polar nature of molecules.
(C)
Pauli exclusion principle.
(D)
Electronegative nature of materials.
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Q2.

If \( B_E \) represents equatorial magnetic field and \( B_A \) represents axial magnetic field due to a bar magnet. Which of the following relationships between \( B_E \) and \( B_A \) is correct?  

(A)
\( B_E = \frac{1}{2} B_A \)
(B)
\( B_A = 2 B_E \)
(C)
\( B_E = \frac{1}{4} B_A \)
(D)
\( B_A = 4 B_E \)
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