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

Most of the fast moving alpha particles passed straight through the gold foil

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Some of the alpha particles were deflected by the foil at small angles

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Very small amount of particles (one out of every 12000 particles) appeared to rebound

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All of these

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Solution

The correct option is D
All of these

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.

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Q. Which of the following statement(s) is/are correct about α-particle scattering experiment?

(i) Most of the α-particles appeared to rebound.
(ii) Few α-particles were deflected by the gold foil by small angles.
(iii) One out of every 12000 particles passed straight through the gold foil.

In Rutherford's alpha particle scattering experiment, when fast moving alpha particles were made to fall on a thin gold foil then most of the alpha particles passed straight through the foil. Which of the given conclusion is correct?

Q. Consider the following observations and their respective conclusions:

\begin{matrix} Observation & Conclusion (i) M o s t o f t h e f a s t m o v i n g α - p a r t i c l e s p a s s e d s t r a i g h t t h r o u g h t h e g o l d f o i l . & M o s t o f t h e s p a c e i n s i d e t h e a t o m i s e m p t y . (i i) S o m e o f t h e α - p a r t i c l e s w e r e d e f l e c t e d b y s m a l l a n g l e s . & P o s i t i v e c h a r g e o f t h e a t o m o c c u p i e s v e r y l i t t l e s p a c e . (i i i) O n e o u t o f e v e r y 12000 p a r t i c l e s a p p e a r e d t o r e b o u n d . & M a s s o f a n a t o m i s s p r e a d i n a v e r y l a r g e v o l u m e . \end{matrix}

Which of the above observation is/are not correctly matched with its conclusion?

During Rutherford's experiment some of the alpha-particles were deflected by the foil by small angles. What does this prove?

Some α-particles were deflected through the foil by small angles and one out of every 12,000 particles rebounded then why did he conclude that all the protons are present inside the nucleus in a small volume even though there were some protons which made small deflections?

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