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Class-6,
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Q1) Which of the following is/are not always necessary to observe a shadow?
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Source of light
Sun
Screen
Opaque object
Q2) ____________ help us to see the objects.
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Opaque objects
Transparent objects
Light
Water
Q3) Paheli observed the shadow of a tree at 8:00 a.m., 12:00 noon and 3:00 p.m. Which of the following statement is closest to her observation about the shape and size of the shadow?
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The shape of the shadow of the three changes but the size ramains the same.
Both the size and shape of the shadow of the tree change.
Neither the shape nor the size of the shadow changes.
The size of the shadow of the three changes but the shape remains the same.
Q4) To see a shadow we need
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Many source of light and opaque object
A source of light and transparent object
A source of light and an opaque object
A source of light and translucent object
Q5) Which of the following will not form circular shadow
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Shoe box
Ice-cream cone
A ball
A circular disk
Q6) Shadow can be seen only on
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Screen
Mirror
Transparent objects.
Sky
Q7) All planets are
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Non-luminous body
Luminous during day
Luminous body
Non-luminous during night
Q8) Which of the following is not a luminous object ?
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Burning gas lantern
Moon
Sun
Glow worm
Q9) An object that emit light is called
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Luminous object
Transparent object
Non-luminous object
Opaque object
Q10) Speed of light is fastest in
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Vaccum
Diamond
Glass
Water
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