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