What does distance of nearest approach Class 12 mean? Answer : The distance of the closest approach is defined as
the minimum distance of the charged particle from the nucleus at which initial kinetic energy is the same to the potential energy of the nucleus
.
What does closest distance of approach mean?
The distance of closest approach of two objects is
the distance between their centers when they are externally tangent
. The objects may be geometric shapes or physical particles with well-defined boundaries. The distance of closest approach is sometimes referred to as the contact distance.
How do you find the nearest distance of an approach?
What is distance of closest approach in Rutherford model?
What is distance of closest approach Class 11?
What do you mean by the distance of closest approach of an alpha particle in Rutherford experiment?
In the Rutherford scattering experiment, the distance of closest approach for an α-particle is
d0
. If α-particle is replaced by a proton, how much kinetic energy in comparison to α-particle will be required to have the same distance of closest approach, d0 ?
What is distance of closest approach in solid state?
The distance of the nearest approach between two atoms is
twice the radius of the atom
.
What is the distance of closest approach of an alpha particle to the nucleus?
In a head on collision between an alpha particle and gold nucleus (Z=79), the distance of closest approach is
39.5 fermi
.
What is the distance of closest approach and impact parameter?
Distance of closest approach is
the distance between the nucleus and alpha particles when it has come to rest or all part of its kinetic energy is converted into potential energy of system
.
What is the distance of closest approach to the gold nucleus?
The distance of closest approach when a 15.0 MeV proton approaches gold nucleus Z =79 isA.
75.8 fmB
.
What is the distance of closest approach of an alpha particle with velocity 10 5?
What is the distance of closest approach when 5 MeV?
The distance of the closest approach when a 5.0 MeV proton approaches a gold nucleus is
Z=79
.
What is the expression for distance of closest approach in Geiger Marsden experiment?
Then we can write the conservation of energy `E_i = E_f` as <br> `K = 1/(4 pi epsilon_0) ((2e)(Ze))/(d) = (2 Ze^2)/(4 pi epsilon_0 d)` <br> Thus the distance of closest approach d is given by <br> `
d = (2 Z e^2)/(4 pi epsilon_0 K)`
<br> The miximum kinetic energy found in `alpha`- particles of natural origin is `7.7 …
How will the distance of closest approach change when I the K.E of the projectile is doubled II velocity of the projectile is halved?
Solution : Distance of closest approach,`d=1//4pi epsilon^0(2e)(Ze)//E As d prop1//E`,
the distance of closest approach is halved
when the K.E of the alpha particle is doubled.
What is the distance of closest approach of an alpha particle of kinetic energy K is bombarded?
Hence, the distance of closest approach would be
r/2
.
What determines the closest distance of an alpha particle?
Solution : Let r be the center to centre distance between the alpha particle and the nucleus ( Z = 80 ) . When the alpha particle is at the stopping point, then <br> `
K =( 1)/( 4pi epsilon_(0)) ((Ze ) ( 2e))/( r )`
<br> ( or ) `r = ( 1)/( 4pi epsilon_(0)).
What will be the distance of closest approach when kinetic energy of alpha particle gets double?
What is the closest approach of body Centred unit cell?
What is unit cell and lattice point?
What is end Centred unit cell?
If one constituent particle lies at the centre of any two opposite faces besides the particles lying at the corners
, it is known as End-Centred Unit Cell.
What is meant by impact parameter?
What is Rutherford scattering formula?
The “differential cross-section”, dσ/dθ, with respect to the scattering angle is the number of scatterings between θ and θ + dθ per unit flux, per unit range of angle, i.e.
dσ dθ = dN(θ) F dθ = π D2 4 cos(θ/2) sin3(θ/2)
.
What is maximum kinetic energy of alpha particle?
What is alpha particle charge?
A positively charged particle ejected spontaneously from the nuclei of some radioactive elements. It is identical to a helium nucleus that has a mass number of 4 and an electrostatic charge of
+2
. It has low penetrating power and a short range (a few centimeters in air).
At what velocity should an alpha particle?
2×107 ms−1
.
What is the speed of alpha particle?
Alpha particles are relatively slow and heavy compared with other forms of nuclear radiation. The particles travel at 5 to 7 % of the speed of light or
20,000,000 metres per second
and has a mass approximately equivalent to 4 protons.
How did Geiger and Marsden contribute to the model of the atom?
What did Rutherford state about the size of nucleus?
The electrons in the atom must be orbiting around this central core, like planets around the sun, Rutherford proposed. Rutherford carried out a fairly simple calculation to find the size of the nucleus, and found it to be only
about 1/100,000 the size of the atom
. The atom was mostly empty space.
How will it be affected for an alpha particle if kinetic energy of the particle is doubled?
What is distance of closest approach and impact parameter?
What is the distance of closest approach of an alpha particle to the nucleus?
In a head on collision between an alpha particle and gold nucleus (Z=79), the distance of closest approach is
39.5 fermi
.
