Question

Radiations given out from a source when subjected to an electric field in a direction perpendicular to their path are shown below in the diagram. The arrows show the path of the radiation A, B and C. Answer the following questions in terms A, B and C.

Name the radiation $B$ which is unaffected by the electrostatic field.

Answer 1

1. Radiations coming out from the box deflect toward the negatively charged plate. These radiations must consist of positively charged particles. Hence these are $\alpha$-radiations.
2. Radiations coming out from the box deflect towards the positively charged plate. These radiations must consist of negatively charged particles. Hence these are $\beta$radiations.
3. Radiations coming out of the box remain unaffected and must consist of neutral particles. These radiations are called gamma$\left(\gamma \right)$ radiations.

Thus the radiation B which is unaffected by the electrostatic field is gamma$\left(\gamma \right)$ radiation.