Physics-(general)
NEET Physics (general) Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 12
Assertion (A): The magnetic energy per unit volume in a region with a magnetic field is proportional to the square of the magnetic field strength. | Reason (R): The formula for magnetic energy density involves the magnetic permeability of free space.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false.
Correct Answer
Option A
Detailed Explanation
The NCERT context states that the magnetic energy per unit volume is proportional to B² and involves the magnetic permeability of free space, which is consistent with the formula B²/2μ₀.
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