One rad is A) the amount of radiation that deposits 10−² J of energy into 1 kg of absorbing material. B) the amount of ionizing radiation that will produce 1/3 × 10−⁹ C of electric charge in 1 cm³ of air under standard conditions. C) the amount of radiation needed for ionization of an atom. D) the amount of radiation needed for dissociation of a molecule. E) the amount of radiation that deposits one erg of energy in 1g of material.

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Quizplus · Accepted Answer

A rad is defined as the amount of radiation that deposits 100 ergs of energy per gram of absorbing material. This can be rewritten as the amount of radiation that deposits one erg of energy in 1g of material, which is option A.

One Rad Is