Q. Two positive ions, each carrying a charge q, are separated by a distance d. If F is the force of repulsion between the ions, the number of electrons missing from each ion will be (e being the charge on an electron)
A) 4πε₀Fd²/q²
B) 4πε₀Fd²/e²
C) √(4πε₀Fe²/d²)
D) √(4πε₀Fd²/e²)
Explanation
[Solution from source] Each ion has charge q = ne. F = (ne)²/(4πε₀d²), so n² = 4πε₀Fd²/e² and n = √(4πε₀Fd²/e²). The same expression without the square root gives n², not n. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.