2.2.2 Data representation Bitmap Images Quiz

What is a pixel in the context of bitmap images?

• A small square of colour that makes up an image

• The overall size of an image

• A file format for images

• The brightness level of an image

What does the resolution of a bitmap image refer to?

• The number of colours an image can display

• The amount of memory used by the image

• The number of pixels per inch or per unit area

• The physical size of the image

How does increasing the colour depth of a bitmap image affect the image?

• Increases the number of colours that can be displayed

• Reduces the file size

• Decreases the resolution

• Converts the image to grayscale

If an image has a resolution of 1920x1080 pixels, how many pixels does it contain in total?

• 1,080

• 19,200

• 2,073,600

• 1,920

What does a colour depth of 24 bits per pixel mean?

• Each pixel is represented by 24 different colours

• Each pixel can display up to 16,777,216 different colours

• The image contains 24 pixels

• Each pixel is stored using 24 bytes of data

How is the binary data for a single pixel in a 2-bit colour depth image typically stored?

• Using 2 bits per pixel

• Using 2 bytes per pixel

• Using 2 pixels per byte

• Using 4 bits per pixel

What is the effect of increasing the resolution of a bitmap image without changing its physical size?

• The pixels become larger

• The file size decreases

• The image becomes sharper and more detailed

• The colour depth increases

Which of the following best describes "colour depth" in bitmap images?

• The number of bits used to represent each pixel's colour

• The number of pixels in the image

• The intensity of each colour in an image

• The brightness level of an image

What would be the approximate file size of a 10x10 pixel image with a colour depth of 8 bits per pixel?

• 100 bytes

• 80 bytes

• 10 bytes

• 1,000 bytes

How does reducing the colour depth of a bitmap image affect the image?

• Increases the number of colours available

• Reduces the resolution

• Reduces the range of colours that can be displayed

• Increases the file size