Pixel dimensions refer to which characteristics of an image?

• A. File size in bytes
• B. Color depth
• C. Width and height in pixels
• D. Resolution in DPI

Answer: (C)

Pixel dimensions measure the width and height of an image expressed in pixels. They define the image’s digital canvas size and determine how many pixels the image contains overall, which affects detail level when displayed on screens. For example, an image that is 1024 by 768 has 1024 columns and 768 rows of pixels. This is separate from file size in bytes, which depends on compression and color data; color depth is how many bits per pixel to describe color, affecting how many colors can be shown; and DPI (dots per inch) relates to print quality and physical size, not the number of pixels. So the pixel dimensions are the width and height in pixels.