A1-3.5 Multimedia - Graphics

Multiple Choice

Which of the following refers to green colour?

• RGB value:

  (255, 0, 0)

• RGB value:

  (0, 255, 0)

• RGB value:

  (0, 0, 255)

• RGB value:

  (0, 0, 0)

Multiple Choice

Which of the following refers to blue colour?

• RGB value:

  (255, 0, 0)

• RGB value:

  (0, 255, 0)

• RGB value:

  (0, 0, 255)

• RGB value:

  (0, 0, 0)

Multiple Choice

Which of the following refers to white colour?

• RGB value:

  (255, 0, 0)

• RGB value:

  (255, 255, 255)

• RGB value:

  (0, 0, 255)

• RGB value:

  (0, 0, 0)

Multiple Choice

Which of the following refers to black colour?

• RGB value:

  (0, 0, 0)

• RGB value:

  (255, 0, 255)

• RGB value:

  (0, 0, 255)

• RGB value:

  (255, 255, 255)

Multiple Choice

Which of the following is not a valid RGB value of a colour?

• RGB value:

  (169, 128, 0)

• RGB value:

  (255, 169, 255)

• RGB value:

  (111, 169, 256)

• RGB value:

  (255, 255, 255)

Multiple Choice

How many colours are supported in 8-bit colour depth?

• 4

• 8

• 16

• 256

Multiple Choice

How many colours are supported in 24-bit colour depth?

• 256

• 1024

• 65536

• 16777216

Multiple Choice

What is the colour depth of a grey-scale (black and white) image?

• 1-bit

• 2-bit

• 8-bit

• 24-bit

Multiple Choice

What is the colour depth of a True Colour image?

• 1-bit

• 2-bit

• 8-bit

• 24-bit

Open Ended

What is the relationship between the number of pixels and the resolution of an image?

Open Ended

What is the relationship between the resolution and the file size of an image?

How does it affect the image quality? Explain briefly.

Open Ended

What is the relationship between the colour depth and the file size of an image?

Open Ended

How to calculate the file size of an uncompressed image?

(Hint 1: A x B or C x D x B)

(Hint 2: Choices of A, B, C, D:

Width, Height, Resolution, Colour Depth, Number of colours)

Open Ended

How large is a 24-bit 1920 x 1080px bitmap? (Express the answer in MB.)

Get your calculator ready!

Show me the steps of calculation!