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