The nature of anode rays depends upon:

When an electron particle strikes a $ZnS$ screen,it produces a flash of light (scintillation). What does this indicate?

The radius of a nucleus with mass number $A$ is given by $1.25 \times 10^{-13} \times A^{1/3} \ cm$. If the radius of the atom is $1 \ \mathring{A}$ and the mass number is $64$,calculate the fraction of the volume occupied by the nucleus.

The fact that the atom is divisible was determined from ............ .

Neutrons are found in atoms of all elements except in

The nucleus of the atom consists of