Multiple choice

Which of the following is not a unit of radiation measursment?

  1. Roentgen

  2. Light year

  3. Radiation absorbed dose

  4. Roentgen equivalent man

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A light-year is a unit of length used by astronomers to measure interstellar distance (the distance between stars). A light-year is defined as the distance that light will travel in a year.