In Order to Minimize Image Distortion,the

question 27

Multiple Choice

In order to minimize image distortion,the:

• A)film must be positioned perpendicular to the long axis of the tooth.
• B)film must be positioned parallel to the long axis of the tooth.
• C)central ray of the x-ray beam must be directed parallel to the film.
• D)central ray of the x-ray beam must be directed parallel to the long axis of the tooth.

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Definitions:

Optimum

The most favorable condition or level for growth, reproduction, or success.

Socially Optimal

The point at which the benefits to society of an action, policy, or project, are maximized, taking into account all costs and benefits.

MSB and MSC

Marginal Social Benefit (MSB) and Marginal Social Cost (MSC) refer to the additional benefit or cost to society of producing one more unit of a good or service.

Pollution

The introduction of contaminants into the natural environment, causing adverse changes and harm to ecosystems and human health.