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Worksheetsintroduction to computer graphics
Total questions: 10
Worksheet time: 3mins
If an image has a height of 2 inches and aspect ratio of 1.5, what will be its width
6
3
1.5
0.75
Inside the frame buffer the image is stored as a pattern of digital numbers
Octal
Binary
Hexadecimal
Decimal
There is a coating on the inside of every CRT.
Nitrogen
Phosphorous
Hydrogen
Mixture of all three
The glow given off by the, phosphor during exposure of the electron beam is known as what ??
Fluorescence
Phosphorescence
Persistence
None of the above
If a 1024 x 768 image is to be resized to one that is 640 pixels wide with the same aspect ratio, what would be the height of resized image in pixels.
256
480
512
856
Resolution is defined as what ??
Number of pixels per unit length
Number of pixels on the screen
Number of pixels in vertical direction
Number of pixels in horizontal direction
The electron beam is swept across the screen, one row at a time from top to bottom in
Random scan system
Both of these
Raster scan system
None of these
Intensity of the electron beam is controlled by setting voltage levels on the
Control grid
Focusing system
Deflection system
Phosphorous
Pixels are arranged in
Rows
Columns
Both rows and columns
They are scattered
Computer Graphics displays the information in the form of
Charts
Graphs
Diagrams
All of the above
