Give Scientific Reasons?

Question

1) Alpha,Beta and Gamma Rays show different order of penetration power.
2) X-rays are also called as Anode rays
3) There is a direct correlation between X-rays and the atomic numbers.
4) Cathode rays exhibit the e/m ratio constant.
5) Line spectrum is considered as the finger print of the atoms af an element.

Answer 1

1) yes Alpha rays hare the heaviest so they go further in matter than beta rays and especially gamma rays which have no charges and so interact poorly with matter
2) in old devices they were produced by electrons projected on an electrode positive (called anode) . these electrons were slowed down and gave X-rays
3) Yes as Z increases production of X-rays increases)
4) Yes.It is a property of matter
5) The spectrum is produced by deexcitation of electrons of the atom going from an external shell to an internal shell. In the calculus of the energy corresponding to the lines, the atomic nummbers is important (energy varies as Z^2)

Answer 2

it is all because of different powers of penetration which can easily be studied in wikipedia