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

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

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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

MCQ
रिकाम्या जागा भरा
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उत्तर

The size of the atom in Thomson’s model is no different from the atomic size in Rutherford’s model.

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पाठ 12: Atoms - EXERCISES [पृष्ठ ३०५]

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एनसीईआरटी Physics Part 1 and 2 [English] Class 12
पाठ 12 Atoms
EXERCISES | Q 12.1 (a) | पृष्ठ ३०५

संबंधित प्रश्‍न

A classical atom based on ______ is doomed to collapse.


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?


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.


Answer the following question.
A charged particle q is moving in the presence of a magnetic field B which is inclined to an angle 30° with the direction of the motion of the particle. Draw the trajectory followed by the particle in the presence of the field and explain how the particle describes this path.


In Geiger-Marsden experiment prediction was that ______.


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 ______.


As compared to 12C atom, 14C atom has ______.


An automobile moves on a road with a speed of 54 km h−1. The radius of its wheels is 0.45 m and the moment of inertia of the wheel about its axis of rotation is 3 kg m2. If the vehicle is brought to rest in l 5s, the magnitude of average torque transmitted by its brakes to the wheel 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:-


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 ______.


Would the Bohr formula for the H-atom remain unchanged if proton had a charge (+4/3)e and electron a charge (−3/4)e, where e = 1.6 × 10–19C. Give reasons for your answer.


Assume that there is no repulsive force between the electrons in an atom but the force between positive and negative charges is given by Coulomb’s law as usual. Under such circumstances, calculate the ground state energy of a He-atom.


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

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?


The shortest wavelength of the Brackett series of a hydrogen like atom of atomic number Z is same as the shortest wavelength of the Balmer series of hydrogen atom, then the value of Z is ______.


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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