Advertisements
Advertisements
प्रश्न
Determine the distance of the closest approach when an alpha particle of kinetic energy 3.95 MeV approaches a nucleus of Z = 79, stops and reverses its directions.
Advertisements
उत्तर
Let 'r' be centre to centre distance between α-particle when α particle is at the stopping point then K = `1/(4piepsilon_0) ((Ze)(2e))/r`
Given: K = 3.95 MeV
= `3.95 xx 10^6 xx 1.6 xx 10^-19` J
⇒ `r = 1/(4piepsilon_0) (2Ze^2)/K`
= `(9 xx 10^9 xx 2 xx 79 xx (1.6 xx 10^-19)^2)/(3.95 xx 10^6 xx 1.6 xx 10^-19)`
= `(9 xx 2 xx 79 xx 1.6 xx 10^-19 xx 10^9)/(3.95 xx 10^6)`
= `576 xx 10^-16` m
`r = 5.76 xx 10^-14` m
APPEARS IN
संबंधित प्रश्न
The positively charged part of the atom possesses most of the mass in ______.
Answer the following question, which help you understand the difference between Thomson’s model and Rutherford’s model better.
Is the probability of backward scattering (i.e., scattering of α-particles at angles greater than 90°) predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?
Write two important limitations of Rutherford's nuclear model of the atom.
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.
Alpha particles used in Geiger-Marsden experiment were obtained from ______.
If the radius of second electron orbit in hydrogen atom be r then the radius of the third orbit will be ______.
The radius of electron's second stationary orbit in Bohr's atom is R. The radius of 3rd orbit will be:-
Nucleolus of an atom of mass No. 24 and charge no. 11 consists of
The ratio of minimum to maxm wavelength in ballmer series is:-
Differentiate between the 'distance of the closest approach' and the 'impact parameter.'
