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
A classical atom based on ______ is doomed to collapse.
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?
An electron in an atom revolves round the nucleus in an orbit of radius r with frequency v. Write the expression for the magnetic moment of the electron.
In a Geiger-Marsden experiment, calculate the distance of closest approach to the nucleus of Z = 75, when a α-particle of 5 MeV energy impinges on it before it comes momentarily to rest and reverses its direction.
How will the distance of closest approach be affected when the kinetic energy of the α-particle is doubles?
In Geiger-Marsden experiment prediction was that ______.
The model that best explains the results of Geiger-Marsden experiment is ______.
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:
Plutonium decays with half of 24000 years. If plutonium is store for 72000 yrs. The fraction of .its that remain:-
The radius of electron's second stationary orbit in Bohr's atom is R. The radius of 3rd orbit will be:-
The ratio active Nude 7N13 decays 6C13 through the emission of
In 88 Ra226 nucleus, there are
The ratio of minimum to maxm wavelength in ballmer series is:-
The Bohr model for the H-atom relies on the Coulomb’s law of electrostatics. Coulomb’s law has not directly been verified for very short distances of the order of angstroms. Supposing Coulomb’s law between two opposite charge + q1, –q2 is modified to |F| = `(q_1q_2)/((4πε_0)) 1/r^2, r ≥ R_0 = (q_1q_2)/(4πε_0) 1/R_0^2 (R_0/r)^ε, r ≤ R_0` Calculate in such a case, the ground state energy of a H-atom, if ε = 0.1, R0 = 1Å.
What is the nuclear radius of 125Fe, if that of 27Al is 3.6 fermi?
The energy of hydrogen atom in an orbit is −1.51 eV. What are the kinetic and potential energies of the electron in this orbit?
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?
How is the size of a nucleus found experimentally? Write the relation between the radius and mass number of a nucleus.
Differentiate between the 'distance of the closest approach' and the 'impact parameter.'
