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WorksheetsImage file sizes
Total questions: 10
Worksheet time: 10mins
To work out the file size for an image you need to know 3 things:
its width, its height, and its colour depth
What do you do with these 3 numbers to find the number of bits needed to store the image?
Add them
Multiply them
Divide them
Subtract them
Work out the number of bits needed to store an image with these properties:
Width 30 pixels
Height 10 pixels
Colour depth 4
(a)
Work out the number of bytes needed to store an image with these properties:
Width 50 pixels
Height 10 pixels
Colour depth 4
(a)
Work out the number of bytes needed to store an image with these properties:
Width 160 pixels
Height 95 pixels
Colour depth 16
(a)
Work out the number of bytes needed to store an image with these properties:
Width 2500 pixels
Height 1800 pixels
Colour depth 12
(a)
An image takes up 275000 bytes when stored.
What is the most appropriate file size for the image?
275000 B
275 KB
0.275 MB
0.000275 GB
An image takes up 3800000 bytes when stored.
What is the most appropriate file size for the image?
3800000 B
3800 KB
3.8 MB
0.0038 GB
Work out the most appropriate file size for an image with these properties:
Width 240 pixels
Height 250 pixels
Colour depth 4
(a)
Work out the most appropriate file size for an image with these properties:
Width 3600 pixels
Height 2700 pixels
Colour depth 16
(a)
A designer creates a square image that is 600 pixels wide.
The file size for the image is 720 KB.
What colour depth did the designer use?
(a)
