Question

Film badges utilize filters composed of which materials?

1) Aluminum
2) Cesium oxide
3) Copper
4) Cobalt

A) 1 and 2
B) 2 and 4
C) 1 and 3
D) 2 and 3

Answer 1

Film badges use filters made of aluminum and copper to discern the type and energy of radiation exposure, with the correct materials corresponding to answer choice C) 1 and 3.

Step-by-step explanation:

Film badges, which are used to measure and monitor exposure to radiation, contain film similar to that used in dental x-ray film. This film captures images created by silver reduced from radiation-sensitive silver compounds in the emulsion. The film is sandwiched between filters made of various materials that absorb different levels of radiation, helping to determine both the penetrating ability of the radiation and the amount. Among the materials used for these filters, aluminum and copper are common due to their differing densities and atomic numbers, which make them useful in distinguishing between various types and energies of radiation.

The correct answer to the question "Film badges utilize filters composed of which materials?" is C) 1 and 3, which corresponds to aluminum and copper.

Answer 2

Film badges use aluminum and copper as filters to measure and analyze the level of exposure to ionizing radiation.

Therefore, the correct answer is C) 1 and 3, meaning aluminum and copper.

Step-by-step explanation:

Film badges are used for monitoring occupational exposure to ionizing radiation. These badges contain photographic film, similar to that used in dental x-ray film, which is particularly sensitive to radiation.

The film is placed between layers of various absorbers to determine the penetrating ability of the radiation as well as to measure the amount. The absorbers commonly used in film badges are aluminum (Al) and copper (Cu).

When exposed to radiation, the silver in the film emulsion is reduced, creating an image that can be analyzed to assess the level of exposure. Therefore, the correct answer to which materials are used as filters in film badges is aluminum and copper.

Therefore, the correct answer is C) 1 and 3, meaning aluminum and copper.