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प्रश्न
Draw a graph showing the variation of the number of particles scattered (N) with the scattering angle θ in the Geiger-Marsden experiment. Why only a small fraction of the particles are scattered at θ > 90°?
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उत्तर
Graph showing the variation of the number of particles scattered (N) with the scattering angle (θ):
The strongly repulsive force exerted by the positively charged nucleus causes the scattering of α-particles at θ > 90°. Because the nucleus is so small, there are fewer distributed α-particles.
संबंधित प्रश्न
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?
Write two important limitations of Rutherford's nuclear model of the atom.
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.
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:
Which of the following transition in a hydrogen atom emit photon of the highest frequency:
The electron in a hydrogen atom is typically found at a distance of about 5.3 × 10−11 m from the nucleus which has a diameter of about 1.0 × 10−15 m. Assuming the hydrogen atom to be a sphere of radius 5.3 × 10−11 m, what fraction of its volume is occupied by the nucleus?
Who performed the alpha-particle scattering experiment in 1909 under the direction of Rutherford?
What was used to observe the scintillations on the screen?
Approximately what percentage of incident alpha-particles were scattered by more than \[1^\circ\]?
