Question

Which of the following was not an observation made during alpha particle scattering experiment?

• A. Most of the fast moving alpha particles passed straight through the gold foil.
• B. Some of the alpha particles were deflected by the foil at small angles.
• C. Very small amount of particles (one out of every 12000 particles) appeared to rebound.
• D. Most of the alpha particles were deflected by the foil at a large angle.

Answer 1

The correct option is D

Most of the alpha particles were deflected by the foil at a large angle.

Alpha particle scattering experiment gave totally unexpected results. Following observations were made:

Most of the fast moving alpha particles passed straight through the gold foil.Some of the alpha particles were deflected by the foil by small angle. One out of every 12000 particles appeared to rebound.

The image shows the scattering of alpha particles.