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15 questions
An object that gives out its own light is called ________
We can see the moon because it reflects _______ into our eyes.
Light travels in _________ lines.
The property of light by which it travels in straight lines is called. _________ propagation of light.
An ______ substance on which shadow is formed called a screen.
Shadow is formed in the direction ________ to the source of light.
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
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
A plane mirror form an image of an object because it ........ light from the object
absorbs
reflects
passes
emits
which of these are required to form the shadow of a ball
torch
ball
screen
all of these
which of the following the non-luminous obejct
sun
moon
stars
firefly
What is the best explanation for Mickey seeing himself in the mirror?
refraction
absorbed
reflection
flipped
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
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
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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