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

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

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?

टिप्पणी लिखिए
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.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 12: Atoms - Exercise [पृष्ठ ४३६]

APPEARS IN

एनसीईआरटी Physics Part I and II [English] Class 12
अध्याय 12 Atoms
Exercise | Q 12.11 (d) | पृष्ठ ४३६

संबंधित प्रश्न

Thorium 90Th232 is disintegrated into lead 82Pb200. Find the number of α and β particles emitted in disintegration.


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.

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?


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.


The model that best explains the results of Geiger-Marsden experiment is ______.


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:


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.


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

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"`

In the Rutherford experiment, α-particles are scattered from a nucleus as shown. Out of the four paths, which path is not possible? 


During Rutherford’s gold foil experiment, it was observed that most of the α-particles did not deflect. However, some showed a deflection of 180°. 

What hypothesis was made to justify the deflection of α-particle by 180°?


How was the small detector positioned to detect scattered alpha-particles?


Where was the radioactive source of alpha-particles placed?


Approximately what percentage of incident alpha-particles were scattered by more than \[1^\circ\]?


How does the size of the nucleus compare with the size of the atom?


If the atomic number of an element is \[Z\], what is the charge on its nucleus?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×