Tag: light and shadow
Questions Related to light and shadow
A thin layer of water is transparent but a very thick layer of water is
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translucent
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opaque
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most transparent
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more transparent
A thin layer of water is transparent but a thick layer of water is translucent as lateral shift depends on thickness of the object.
A body which allows most of the light to pass through it is called a
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transparent body
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opaque body
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translucent body
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none of these
A body which allows most of the light to pass through it is called a transparent body.
Air is not visible because it
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is nearly perfectly transparent substance
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neither absorbs nor reflects light
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transmits whole of light
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all the above are correct
Air is not visible because it is transparent medium. As from definition of transparent medium, their reflectance and emitance is zero , hence it transmits all the light.
Which of the following is a transparent?
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Gold
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Glass
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Stone
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Plastic
Objects which allow the light to pass through them completely without any obstruction are called $ \bf{transparent} $ objects.
Glass is a $\bf{transparent} $ object because it allows light to pass through it completely and doesn't block any light.
Gold and Stone, on the other hand, are $ \bf{opaque} $ objects. While, Plastic is $ \bf{translucent} $.
A cyan colour light ray is passed through a blue filter. What is the colour of the light which comes out through the filter?
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Green
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Cyan
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Yellow
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Blue
The color of light coming through a filter is specific to the filter.for example blue filter will allow only blue rays to pass through it.
What is the colour of a green leaf, when white light passing through a yellow filter is incident on it?
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Black
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Blue
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Yellow
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Green
Color of an object visible to us is independent of the color of light incident on it. Hence a green leaf will look green even if yellow light is incident on it.
A body which allows almost all the light to pass through it and does not reflect any light is a-
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transparent body
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opaque body
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translucent body
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polished surface
Objects which allow the light to pass through them completely without any obstruction or reflection are called $ \bf{transparent} $ objects.
Objects which do not allow the light to pass through them are called $\bf{opaque} $ objects.
Objects which allow the light to pass through them partially are called $ \bf{translucent} $ objects.
Polished surfaces are good reflectors of light and do not allow light to pass through it.
Hence, the correct answer is OPTION A.
A medium which partially allows the light rays to pass through it is called -
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transparent
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opaque
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non-luminous
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translucent
Objects or medium which do not allow the light to pass through them are called $\bf{opaque} $ objects or medium.
Hence, the correct answer is OPTION D.
Glass allows light to pass through it because it is -
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transparent
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opaque
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luminous
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non-luminous
Objects which allow the light to pass through them completely without any obstruction are called $ \bf{transparent} $ objects.
Objects that give out or emit light of their own are called as $ \bf{luminous} $ objects.
Objects which do not emit light on their own are called $ \bf{non-luminous}$ objects.
Thus, glass allows light to pass through it because it is transparent and doesn't block any light.
Hence, the correct answer is OPTION A.
Cellophane paper is an example of -
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an opaque object
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a translucent object
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a transparent object
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a luminous object
Since, cellophane paper allows light to pass through it completely, it is a transparent object. Also, it doesn't emit any light.
Hence, the correct answer is OPTION C.