Question

3 multiple choice 1 point if the prime factor that controls contrast is doubled, how much will the quantity of the beam increase or decrease? increase by 2 increase by 4 decrease by 2 decrease by 4 4 multiple choice 1 point what is the relationship between the prime factor that controls contrast and image density? direct indirect no relationship

Explanation:

Step1: Assume relationship for question 3

In imaging, if the prime - factor controlling contrast (say k) is related to the quantity of the beam (say Q) by a linear relationship Q = mk (m is a non - zero constant). When k is doubled (new k = 2k), new Q'=m(2k)=2mk = 2Q. So it increases by 2.

Step2: Recall relationship for question 4

The prime factor that controls contrast and image density have an indirect relationship. As the factor that controls contrast changes in a certain way, the image density changes in the opposite way.

Answer:

1. increase by 2
2. Indirect