Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Medium-Class 12
If two point charges are placed 5 cm apart and the force between them is measured to be 0.36 N, what will be the force if the distance is increased to 10 cm, assuming the charges remain the same?
A
0.09 N
B
0.18 N
C
0.72 N
D
44 N
Correct Answer
Option A
Detailed Explanation
According to Coulomb's law, the force between two point charges is inversely proportional to the square of the distance between them. Doubling the distance from 5 cm to 10 cm reduces the force by a factor of 4 (since (1/2)^2 = 1/4), making it 0.09 N.
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