The emissions from a radioactive source pass through a sheet of lead, 10 mm thick. Which row describes other properties of these emissions?
1 )
ionising effect: strong / deflection in an electric field: from positive to negative
2 )
ionising effect: strong / deflection in an electric field: no deflection
3 )
ionising effect: weak / deflection in an electric field: from positive to negative
ionising effect: weak / deflection in an electric field: no deflection
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