INBDE (Integrated National Board Dental Examination) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Background radiation is how much per year?

2mSv
3.1mSv from radon
6.2mSv
50mSv

The correct answer is: 3.1mSv from radon

Background radiation refers to the ionizing radiation that we are exposed to on a daily basis from natural sources such as radon, cosmic radiation, and terrestrial sources. Radon is a colorless, odorless, tasteless radioactive gas that is produced naturally in the decay chain of uranium and thorium. It is a significant source of background radiation exposure, contributing around 3.1mSv per year to an individual's total radiation exposure. This makes option B the correct answer. Options A, C, and D provide different values for the annual background radiation exposure, but they are not accurate in the context of radon-induced background radiation.