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NCERT Solutions Class 8 Science Solutions for Exercise in Chapter 16 - Light
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Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room? Explain.
Answer:
If a person is inside the room where there is no light, it is then impossible to visualize the object inside the room but the object out of the room can be seen easily.
When light falls on eyes after reflecting from the object, it becomes visible. If the room is dark, then the object which is in the room reflects no light. Hence, the person is not able to see the objects in the room where there is no light.
Video transcript
"hello students my name is rabbit singh
and i welcome you all
to leader learning homework one of
india's best online classes
now today in this video we have a
question that is based on chapter light
the question says suppose you are in a
dark room can you see objects in a room
can you see objects outside the room
explain this is a practical question
in which suppose uh if you are there
inside your room
switch off the lights you can't see any
of the objects inside the room why
because there is no reflection there is
no light in that room
so we won't be able to see anything only
just a black
blackout right but if suppose there is
light outside the house
outside the room then we will be able to
see the objects
now what is the concept behind this the
uh
inside the room suppose this is your
room there is no light
there is no light but outside the room
suppose this is the
source of light there is a reflection of
light so
the light falls in any object and as a
result
what happens it glows it reflects the
light
so we can see if we are there inside the
room
so the answer is also written for your
reference if a person is inside the room
where there is no light it is impossible
to visualize the object inside the room
but the object out of the room can be
seen easily
as we have discussed already if there is
a light source outside the room
and the light is falling on that
particular object it will be
visible to us inside the room when light
falls on eyes
after reflecting from the object it
becomes visible
like you can imagine like suppose this
is any object
this is any object and this is the
source of light and it is
light is falling on this and suppose we
are standing here
so this falls on our eyes and as a
result what happens we are able to see
the object clearly why
because it is reflecting the light so it
becomes visible
if the room is dark then the object
which is in the room reflects no light
so there is no source of light so hence
the room is dark
hence the person is not able to see the
objects in the room where there is no
light
so i hope you have understood the
concept of dark room and when the light
will fall on the vertical object so that
it reflects light and that can be
seen by the visible eye
but still if you have any doubt please
comment in the comment box and do like
and subscribe our channel follow thank
you
"
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