Identify the smallest identifiable area of a bitmap image.
Mark scheme
- C Pixel (1)
- The only correct answer is C. The correct answer is pixel.
- A is not correct because colour depth is the number of bits used to store the colour of each pixel
- B is not correct because file size is the amount of storage an image takes up, not an area of the image
- D is not correct because resolution is a measure of the number of pixels in an image (such as its width × height), not the smallest identifiable area
Example answers and how they were marked
Full marks1/1
C Pixel
Why: Correct option; a pixel is the smallest identifiable area of a bitmap image (1).
No marks0/1
D Resolution
Why: Resolution is a measure of the number of pixels in an image, not the smallest identifiable area; no mark.
No marks0/1
A Colour depth
Why: Colour depth is the number of bits used to store each pixel's colour, not the smallest identifiable area; no mark.