Images

Multiple Choice

How many bits can be represented using 4 bits?

• 16

• 4096

• 8

• 24

Multiple Choice

how many colours can be represented with a byte ?

• 257

• 127

• 256

• 255

​Image resolution and file size

​Calculating the size of an image file

To calculate how much space a raster image takes up in memory we use the following formula:

 

Width (in pixels) X Height (in Pixels) X Bit Depth (in bits)

Multiple Choice

Width 8 height 4 colour depth 4

• 64

• 128

• 256

• 100

Multiple Choice

1024 x 512 with a colour depth of 3

• 17

• I'm to lazy to do maths pray for me in the exams

• 1548963

• 1572864