Occupational and Environmental Health: Recognizing and Preventing Disease and Injury - Multiple Choice Questions - Learn & Prevent

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What does Haber's Law state?

Dose is inversely proportional to exposure duration
Dose is independent of exposure concentration
Dose is a product of concentration times duration of exposure
Dose effectiveness decreases with increased exposure frequency

The correct answer is: Dose is a product of concentration times duration of exposure

Haber's Law states that the dose (amount) of a substance absorbed by an individual is a product of two factors the concentration of the substance and the duration of exposure. This means that as either of these factors increases, the dose also increases. Option A is incorrect because it erroneously implies that the dose and exposure duration have an inverse relationship, when in fact they have a direct relationship according to Haber's Law. Option B is incorrect because the dose does depend on the concentration of the substance, as stated in Haber's Law. Option D is incorrect because it suggests that dose effectiveness decreases with increased exposure frequency, which is not stated in Haber's Law. Rather, Haber's Law is solely concerned with the relationship between dose and concentration and duration of exposure.