Q. A beam of fast moving alpha particles were directed towards a thin film of gold. The parts $A^{'},B'$ and $C'$ of the transmitted and reflected beams corresponding to the incident parts $A,B$ and $C$ of the beam, are shown in the adjoining diagram. The number of alpha particles in
A) $B'$ will be minimum and in $C'$ maximum
B) $A'$ will be maximum and in $B'$ minimum
C) $A'$ will be minimum and in $B'$ maximum
D) $C'$ will be minimum and in $B'$ maximum
Explanation
(b) Because atom is hollow and whole mass of atom is concentrated in a small centre called nucleus
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.