Describe Geiger-Marsden scattering experiment.
Describe Geiger-Marsden scattering experiment.
As shown in above figure, they directed a beam of $5.5 \mathrm{MeV} \alpha$-particle emitted from a ${ }_{83}^{214} \mathrm{Bi}$ radioactive source at a thin metal foil made of gold. $\alpha$-particles emitted by a ${ }_{83}^{214} \mathrm{Bi}$ radioactive source were collimated into a narrow beam by their passage through lead bricks. As shown in the figure below, the beam was allowed to fall on a thin foil of gold of thickness $2.1 \times 10^{-7} \mathrm{~m}$.
The scattered $\alpha$-particles on striking the screen produced brief light flashes (scintillations).
These flashes may be viewed through a microscope and the distribution of the number of scattered particles may be studied as a function of angle of scattering.
Similar Questions
In a hydrogen atom, the electron is in $n^{th}$ excited state. It may come down to second excited state by emitting ten different wavelengths. What is the value of $n$ :
In a hydrogen atom, the electron is in $n^{th}$ excited state. It may come down to second excited state by emitting ten different wavelengths. What is the value of $n$ :
Given below are two statements:
Statement $I$: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement $II$: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below.
Given below are two statements:
Statement $I$: Atoms are electrically neutral as they contain equal number of positive and negative charges.
Statement $II$: Atoms of each element are stable and emit their characteristic spectrum.
In the light of the above statements, choose the most appropriate answer from the options given below.
- [NEET 2024]
Explain the Rutherford atomic model and its limitation.
Explain the Rutherford atomic model and its limitation.
In an atom for the electron to revolve around the nucleus, the necessary centripetal force is obtained from the following force exerted by the nucleus on the electron
In an atom for the electron to revolve around the nucleus, the necessary centripetal force is obtained from the following force exerted by the nucleus on the electron
What is plum pudding model of the atom ?
What is plum pudding model of the atom ?