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- 1. Fill in the Blank
An object that gives out its own light is called ________
- 2. Fill in the Blank
We can see the moon because it reflects _______ into our eyes.
- 3. Fill in the Blank
Light travels in _________ lines.
- 4. Fill in the Blank
The property of light by which it travels in straight lines is called. _________ propagation of light.
- 5. Fill in the Blank
An ______ substance on which shadow is formed called a screen.
- 6. Fill in the Blank
Shadow is formed in the direction ________ to the source of light.
- 7. Multiple Choice
Rectilinear propagation of light means
light bends after striking a smooth surface
light travels in a straight line
light travels in a curvilinear line
both a and b
- 8. Multiple Choice
which of the characteristics is not exhibited by the shadow of an object?
erect
can be formed on screen
same colour as the object
can be bigger than the object
- 9. Multiple Choice
A plane mirror form an image of an object because it ........ light from the object
absorbs
reflects
passes
emits
- 10. Multiple Choice
which of these are required to form the shadow of a ball
torch
ball
screen
all of these
- 11. Multiple Choice
which of the following the non-luminous obejct
sun
moon
stars
firefly
- 12. Multiple Choice
What is the best explanation for Mickey seeing himself in the mirror?
refraction
absorbed
reflection
flipped
- 13. Multiple Choice
which of the characteristics is not exhibited by the shadow of an object?
erect
can be formed on screen
same colour as the object
can be bigger than the object
- 14. Multiple Choice
As the object moves closer to the source of light, the size of the shadow
increases
decreases
remains the same
is too small to see
- 15. Multiple Choice
Why do shadows made by the Sun move over the course of a day?
Because the weather changes
Because someone moves the objects
Because the Sun appears to move across the sky
Because it is magical!
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