AIIMS2000Physics-Magnetism
AIIMS 2000 Physics Magnetic Forces MCQ Question
Type: MCQ-numerical-Medium-Class 12
Force between two identical bar magnets whose centres are r metre apart is 4.8 N when their axes are in the same line. If separation is increased to 2r, the force between them is reduced to
A
2.4 N
B
0.6 N
C
1.2 N
D
0.3 N
Correct Answer
Option D
Detailed Explanation
The force between two magnets is inversely proportional to the square of the distance between them. Doubling the distance reduces the force by a factor of four.
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