Exam-style question
Try this first
Which statement correctly describes resolution for a bitmap image?.
- A.It is the number of bits stored for each pixel
- B.It is the width multiplied by the height of the image
- C.It is expressed as the number of dots per inch, where a dot is a pixel
- D.It is the amount of metadata stored with the image
Model answer
What a good answer should say
- It is expressed as the number of dots per inch, where a dot is a pixel
Explanation
Why this works
Resolution is expressed as dots per inch. In this context, each dot is a pixel.
The term size of an image may also be used to mean its width and height in pixels, so the two ideas should not be confused.
Common mistake
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