Advertisements
Advertisements
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?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
In the ground state of ______ electrons are in stable equilibrium, while in ______ electrons always experience a net force.
An atom has a nearly continuous mass distribution in a ______ but has a highly non-uniform mass distribution in ______.
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 ______.
In Geiger-Marsden experiment, actual results were ______.
The model that best explains the results of Geiger-Marsden experiment is ______.
In a capillary tube, water rises by 1.2 mm. The height of water that will rise in another capillary tube having half the radius of the first is:
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:
Plutonium decays with half of 24000 years. If plutonium is store for 72000 yrs. The fraction of .its that remain:-
Which of the following transition in a hydrogen atom emit photon of the highest frequency:
Nucleolus of an atom of mass No. 24 and charge no. 11 consists of
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°?
A narrow beam of protons, each having 4.1 MeV energy is approaching a sheet of lead (Z = 82). Calculate:
- the speed of a proton in the beam, and
- the distance of its closest approach
The electron in a hydrogen atom is typically found at a distance of about 5.3 × 10−11 m from the nucleus which has a diameter of about 1.0 × 10−15 m. Assuming the hydrogen atom to be a sphere of radius 5.3 × 10−11 m, what fraction of its volume is occupied by the nucleus?
The energy levels of a certain atom for first, second and third levels are E, 4E/3 and 2E, respectively. A photon of wavelength λ is emitted for a transition 3 `→` 1. What will be the wavelength of emission for transition 2 `→` 1?
Choose the correct option from the following options given below:
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 ______.
- v2
- `1/"m"`
- `1/"v"^2`
- `1/"Ze"`
Differentiate between the 'distance of the closest approach' and the 'impact parameter.'
