Advertisements
Advertisements
प्रश्न
The size of the atom in Thomson’s model is ____________ the atomic size in Rutherford’s model.
पर्याय
much greater than
no different from
much less than
उत्तर
The size of the atom in Thomson’s model is no different from the atomic size in Rutherford’s model.
APPEARS IN
संबंधित प्रश्न
With the help of a neat labelled diagram, describe the Geiger- Marsden experiment
An atom has a nearly continuous mass distribution in a ____________ but has a highly non-uniform mass distribution in ____________.
(Thomson’s model/Rutherford’s model)
Write two important limitations of Rutherford's nuclear model of the atom.
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.
The model that best explains the results of Geiger-Marsden experiment is ______.
The first line of Balmer series (Hα) in the spectrum of hydrogen is obtained when an electron of hydrogen atom goes from ______.
For 7.7 Mev alpha particles scattering from aluminium (Z = 13), the distance of closest approach in a bead on collision is ______.
Useful data
`1/(4 pi ∈_0) = 8.99 xx 10^9` newton m2C-2; c = 1.60 × 10-19 C; leV = 1.60 × 10-19j.
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:
Which one of the following statements does not hold good when two balls of masses m1 and m2 undergo elastic collision?
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:
In 88 Ra226 nucleus, there are
Nucleolus of an atom of mass No. 24 and charge no. 11 consists of
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?
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
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?
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"`
