# Sensitometry Chaper 10 Review

## 10 terms · Review questions for Chapter 10

### D

What term is defined as a measurement of the amount of light transmitted through the film? (p 233)
A. Sensitometry
B. Film Contrast
C.Film Speed
D. Optical Density

### C

What is the diagnostic range of optical densities? (p 235)
A. 0.15 to 4.0
B. 0.5 to 1.25
C. 0.50 to 2.0
D. 0.10 to 2.0

### D

An optical density of 1.0 indicates that _____ light was transmitted. (p 234)
A. 0.01%
B. 0.1%
C. 1.0%
D. 10%

### B

A ______ change in optical density results from a change in the percentage of light transmittance by a factor of 2. (p 235)
A. 0.03
B. 0.3
C. 3.0
D. 30

### A

Changes in exposure have little effect on density in which of the following regions of the sensitometric curve: (1) toe, (2) shoulder, or (3) straight line? (p 239)
A. 1 and 2 only
B. 1 and 3 only
C. 2 and 3 only
D. 1,2, and 3

### C

When the exposure technique used produces densities outside the straight-line portion of a sensitometric curve, how is contrast affected? (p 250)
A. Increased
B. No effect
C. Decreased
D. Improved

### A

Compare the sensitometric curves in Figure 9-20. Which film is faster?
A. Film A
B. Film B
C. Film C
D. Film D

### D

Compare the sensitometric curves in Figure 9-20. Which film has lower contrast?
A. Film A
B. Film B
C. Film C
D. Film D

### A

Film B has an exposure speed point of 1.5, and Film A has an exposure speed point of 1.2. Is there a difference in speed?
A. Film A is twice as fast as Film B
B. Film A and Film B have equal speed
C. Film A is half as fast as Film B
D. Film B is twice as fast as Film A

### C

Changes in radiation exposure have the greatest effect on optical densities in which sensitometric region?
A. Toe
B. Shoulder
C. Straight line
D. Toe and Shoulder