Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Easy-Class 12
Which combination of statements about magnetic field lines is correct?
A
Magnetic field lines can cross each other; they can form closed loops in empty space.
B
Magnetic field lines can never cross each other; they can form closed loops if they enclose a current.
C
Magnetic field lines indicate the strength of the magnetic field; they can never form closed loops.
D
Magnetic field lines are always confined within a magnet; they can cross at certain points.
Correct Answer
Option B
Detailed Explanation
Magnetic field lines can never cross each other because it would create ambiguity in direction. They can form closed loops only when they enclose a region with current, as stated in the context.
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