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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better. Is the probability of backward scattering

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प्रश्न

Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.

Is the probability of backward scattering (i.e., scattering of α-particles at angles greater than 90°) predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?

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उत्तर

Much less

The probability of scattering of α-particles at angles greater than 90° predicted by Thomson’s model is much less than that predicted by Rutherford’s model.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 12: Atoms - Exercise [पृष्ठ ४३६]

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एनसीईआरटी Physics Part I and II [English] Class 12
पाठ 12 Atoms
Exercise | Q 12.11 (b) | पृष्ठ ४३६

संबंधित प्रश्‍न

Using Rutherford's model of the atom, derive the expression for the total energy of the electron in hydrogen atom. What is the significance of total negative energy possessed by the electron?


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The size of the atom in Thomson’s model is ______ the atomic size in Rutherford’s model.


Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.

In which model is it completely wrong to ignore multiple scattering for the calculation of average angle of scattering of α-particles by a thin foil?


Define the distance of closest approach. An α-particle of kinetic energy 'K' is bombarded on a thin gold foil. The distance of the closest approach is 'r'. What will be the distance of closest approach for an α-particle of double the kinetic energy?


Write two important limitations of Rutherford's nuclear model of the atom.


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The total energy of an electron in the ground state of the hydrogen atom is -13·6 eV. Its total energy, when a hydrogen atom is in the first excited state, is ______.


Answer the following question.
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The model that best explains the results of Geiger-Marsden experiment is ______.


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A narrow beam of protons, each having 4.1 MeV energy is approaching a sheet of lead (Z = 82). Calculate:

  1. the speed of a proton in the beam, and
  2. the distance of its closest approach

An alpha nucleus of energy `1/2`mv2 bombards a heavy nuclear target of charge Ze. Then the distance of closest approach for the alpha nucleus will be proportional to ______.

  1. v2
  2. `1/"m"`
  3. `1/"v"^2`
  4. `1/"Ze"`

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Differentiate between the 'distance of the closest approach' and the 'impact parameter.'


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