Year 7 HT3 Images II

How do you calculate the file size of an uncompressed image?

• Width × Height × Color Depth
• Width + Height + Color Depth
• (Width × Height) ÷ Color Depth
• Width × Height × number of colours

An image is 200 pixels wide, 100 pixels high, and uses 4-bit color depth. What is the file size in bits?

• 80,000 bits
• 20,000 bits
• 40,000 bits
• 100,000 bits

An image is 300 pixels wide, 200 pixels high, and uses 8-bit color depth. What is the file size in bits?

• 480,000 bits
• 600,000 bits
• 500,000 bits
• 400,000 bits

An image is 150 pixels wide, 100 pixels high, and has a file size of 60,000 bits. What is the color depth?

• 2 bits
• 4 bits
• 8 bits
• 16 bits

An image is 500 pixels wide, 300 pixels high, and has a file size of 750,000 bits. What is the color depth?

• 5 bits
• 6 bits
• 8 bits
• 10 bits

A 400 × 200 pixel image has a color depth of 2 bits. What is the file size?

• 120,000 bits
• 160,000 bits
• 80,000 bits
• 200,000 bits

A 600 × 400 pixel image has a file size of 960,000 bits. What is the color depth?

• 4 bits
• 6 bits
• 8 bits
• 10 bits

If an image is 100 pixels wide, 50 pixels high, and uses a 1-bit color depth, what is the file size?

• 2,500 bits
• 5,000 bits
• 7,500 bits
• 10,000 bits

If a 200 × 150 pixel image has a file size of 600,000 bits, what is the color depth?

• 8 bits
• 12 bits
• 16 bits
• 20 bits

How many colours can I represent with a 4 bit colour depth?

• 16
• 4
• 6
• 8