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प्रश्न
When alpha particles are sent through a thin gold foil, most of them go straight through the foil, because ______.
विकल्प
alpha particles are positively charged.
the mass of an alpha particle is more than the mass of an electron.
most of the part of an atom is empty space.
alpha particles move with high velocity.
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उत्तर
When alpha particles are sent through a thin gold foil, most of them go straight through the foil, because most of the part of an atom is empty space.
Explanation:
When we pass the alpha particle on gold foil in Rutherford's alpha scattering experiment, there are a few observations that are recorded as:
- The majority of the particles are not deflected.
- Some of the particles are bent at tiny angles.
- Very few particles are deflected and returned by 180°.
As a result, we can deduce;
- The majority of the space in Atom is empty.
- A nucleus is a small location where a very small mass is concentrated.
- The mass of an atom is concentrated in the core nucleus, leaving the rest vacant.
- As a result, when positively charged alpha particles are delivered through metal foil, they pass straight through the foil.
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संबंधित प्रश्न
Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperatures below 14 K.) What results do you expect?
Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.
Keeping other factors fixed, it is found experimentally that for small thickness t, the number of α-particles scattered at moderate angles is proportional to t. What clue does this linear dependence on t provide?
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