Physics
Radiations given out from a source when subjected to an electric field in a direction perpendicular to their path are shown in the diagram. The arrows show the path of the radiation A, B and C. Answer the following question in terms of A, B and C.
(i) Name the radiation B which is unaffected by the electrostatic field.
(ii) Why does the radiation C deflect more than A?
(iii) Which among the three causes the least biological damage externally.
(iv) Name the radiation which is used in carbon dating.
Radioactivity
ICSE 2018
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Answer
(i) The radiation B i.e., γ radiation is unaffected by the electrostatic field.
(ii) The radiation C is the β radiation which is lighter than radiation A (α radiation).
(iii) The radiation A (i.e., α) causes the least biological damage.
(iv) The radiation C (i.e., β radiation) is used in carbon dating.
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