4. Which of the following observations was not correct during Rutherford's scattering experiment?
(a) Most of the a-particles passed through the gold foil undeflected.
(b) A small fraction of the a-particles was deflected by small angles.
(c) A large number of the a-particles were bounced back.
(d) A very few a particles (1 in 20,000) were bounced back.
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a large number of the alpha particles were bounced back
Explanation:
a few numbers of particles are bounced back because of heavy concentrated nucleus is present at the center.
nucleus is thick and non fermiable hence particles doesn't pass through it
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