If an `alpha`-particle is incident directly towards a nucleus then it will stop when the distance between them is the distance of closest approach. Which of these is correct?

An alpha -particle with kinetic energy K is heading towards a stationary nucleus of atomic number Z . Find the distance of the closest approach.

An alpha particle having KE equal to 8.7MeV is projected towards the nucleus of copper with Z=29. Calculate its distance of closest approach.

Write the expression for distance of closest approach for a alpha -particle.

Alpha-particles are projectied towards the nuclei of the following metals with the same kinetic energy. Towards which metal, the distance of closest approach is minimum?

The distance of closest approach of an alpha-particle fired towards a nucleus with momentum p is r. What will be the distance of closest approach when the momentum of alpha-particle is 2p ?

The distance oif closest approach of an alpha-particle fired towards a nucleus with momentum p is r. What will be the distance of closest approach when the momentum of alpha-particle is 2p ?

If and alpha -paricle of mass m, charged q and velocity v is incident on a nucleus charge Q and mass m, then the distance of closest approach is

a-particles are projected towards the following metals,with the same kinetic energy. Towards which metal, the distance of closest approach is minimum?