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