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