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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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?

Q. In the gold foil experiment, few alpha particles got deflected by small angles.

Q. When fast moving alpha particles are made to fall on a thin gold foil, most of them go straight through the foil because:

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