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प्रश्न
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?
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उत्तर
Thomson’s model
It is wrong to ignore multiple scattering in Thomson’s model for the calculation of the average angle of scattering of α−particles by a thin foil. This is because a single collision causes a very little deflection in this model. Hence, the observed average scattering angle can be explained only by considering multiple scattering.
संबंधित प्रश्न
With the help of a neat labelled diagram, describe the Geiger- Marsden experiment
The size of the atom in Thomson’s model is ______ the atomic size in Rutherford’s model.
A classical atom based on ______ is doomed to collapse.
An atom has a nearly continuous mass distribution in a ______ but has a highly non-uniform mass distribution in ______.
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?
Answer the following question.
Explain briefly how Rutherford scattering of α-particle by a target nucleus can provide information on the size of the nucleus.
Alpha particles used in Geiger-Marsden experiment were obtained from ______.
In Geiger-Marsden experiment, actual results were ______.
A radioactive nucleus (initial mass number A and atomic number Z) emits 3 α- particles and 2 positrons. The ratio of the number of neutrons to that of protons in the final nucleus will be:
The equation of trajectory of a projectile is given by y = `"x"/sqrt3 - "gx"^2/20`, where x and y are in metres. The maximum range of the projectile is:
The radius of electron's second stationary orbit in Bohr's atom is R. The radius of 3rd orbit will be:-
Which of the following transition in a hydrogen atom emit photon of the highest frequency:
The ratio of minimum to maxm wavelength in ballmer series is:-
O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms ______.
Draw a graph showing the variation of the number of particles scattered (N) with the scattering angle θ in the Geiger-Marsden experiment. Why only a small fraction of the particles are scattered at θ > 90°?
According to Bohr model, magnetic field at centre (at the nucleus) of a hydrogen atom due to motion of electron in the ninth orbit is proportional to:
If λa, λb and λc represent the Kα, Kβ and Lα transition wavelengths in a hydrogen atom, respectively. Then which of the following is correct?
Differentiate between the 'distance of the closest approach' and the 'impact parameter.'
During Rutherford’s gold foil experiment, it was observed that most of the α-particles did not deflect. However, some showed a deflection of 180°.
What hypothesis was made to justify the deflection of α-particle by 180°?
