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 of A, B and C.

1) Name the radiation B which is unaffected by the electrostatic field.

2) Why does the radiation C deflect more than A?

3) Which among the three causes the least biological damage externally.

4) Name the radiation which is used in carbon dating.

Answer 1

1) Gamma radiations

2) Because of the mass of B particle is less than that of α, hence radiation deflects more than A.

3) `gamma` rays 

4) beta radiation `""_6^14C -> ""_7^14N + ""_(-1)^0beta^(-)`