A) \[\alpha \]-particles
B) \[\beta \]-particles
C) \[\gamma \]-particles
D) X-rays
Correct Answer: B
Solution :
Phosphorus-32 is used in agriculture for tracking a plants uptake of fertilizer from the roots to the leaves. The phosphorus- 32 is added to soil water. As it has a half- life of 14.3 days and emits \[\text{ }\!\!\beta\!\!\text{ }\]-particles, its passage through the plant can be traced. \[\text{ }\!\!\beta\!\!\text{ }\] -particles have enough penetration power to surface from root systems and from inside plant tissues.
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