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Seeing colored objects | unit 1 - lesson 2
Seeing colored objects | unit 1 - lesson 2
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تكرار
1
When sunlight strikes a blue transparent glass sheet, the sheet appears...........
red.
yellow.
black.
blue.
2
The green glass bottle.......... when white light falls on it.
reflects all light colours
reflects the green colour only
absorbs all light colours
absorbs all light colours and allows the green colour only to pass through
3
............ reflects all light colours.
Black opaque object
Transparent object
Yellow opaque object
White opaque object
4
The flewer seems red, because it absorbs..........
red and green colours.
all light colours.
all light colours and reflects the red colour only.
the red colour only.
5
Transparent and translucent objects have the same colour of...........
the refracted light colour.
the reflected light colour.
the absorbed light colour.
the transmitted light colour.
6
All the following coloured lights are primary lights except...........
yellow.
green.
red.
blue.
7
......... are coloured lights which impossible to be produced by mixing two of the other coloured lights.
Secondary coloured lights
Yellow and green
Green and magenta
Primary coloured lights
8
When you look at a red apple from a yellow glass sheet, the apple seems............
Yellow.
Blue.
black.
Red.
9
Mixing.......... lights produces magenta light.
red and green
red and yellow
blue and green
red and blue
10
Which of the primary colours are mixed to produce yellow colour ?...........
Red and green .
Blue and red.
Blue and cyan.
Green and blue.
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