Two images are displayed at the same physical size. Image A has a higher resolution than image B.
Identify what this means.
Mark scheme
- C Image A has more pixels per inch (1)
- The only correct answer is C. The correct answer is more pixels per inch.
- A is not correct because bits per pixel is the colour depth
- B is not correct because more colours is caused by a higher colour depth, not a higher resolution
- D is not correct because a higher resolution usually needs more storage, not less
Example answers and how they were marked
Full marks1/1
C Image A has more pixels per inch
Why: Correct option; resolution is the concentration of pixels, such as pixels per inch (1).
No marks0/1
B Image A has more colours
Why: More colours is an effect of colour depth, not resolution; no mark.
No marks0/1
A Image A has more bits per pixel
Why: Bits per pixel is the colour depth, not the resolution; no mark.