Q. When $\alpha -$particles are sent through a thin metal foil, most of them go straight through the foil because
A) Most part of the atom is empty space
B) Alpha particles move with high speed
C) Alpha particles are much heavier than electrons
D) Alpha particles are positively charged
Explanation
The correct answer is Option A: Most part of the atom is empty space.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.