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

The positively charged part of the atom possesses most of the mass in ______. - Physics

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प्रश्न

The positively charged part of the atom possesses most of the mass in ______.

विकल्प

  • Rutherford’s model

  • both the models

MCQ
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उत्तर

The positively charged part of the atom possesses most of the mass in both the models.

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अध्याय 12: Atoms - EXERCISES [पृष्ठ ३०५]

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एनसीईआरटी Physics [English] Class 12
अध्याय 12 Atoms
EXERCISES | Q 12.1 (e) | पृष्ठ ३०५

संबंधित प्रश्न

With the help of a neat labelled diagram, describe the Geiger- Marsden experiment


Using Rutherford's model of the atom, derive the expression for the total energy of the electron in hydrogen atom. What is the significance of total negative energy possessed by the electron?


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


Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.

Is the average angle of deflection of α­-particles by a thin gold foil predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?


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?


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 basic force acting on the alpha particles using Coulomb's law is ______.


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.


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


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:


Plutonium decays with half of 24000 years. If plutonium is store for 72000 yrs. The fraction of .its that remain:-


An alpha particle has


In 88 Ra226 nucleus, there are


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.


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:


Radius of the 1st orbit of hydrogen atom is r0. What will be the radius of the 4th orbit?


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