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What is the difference between shadows and images?
Write difference between Transparent , Translucent and Opaque objects?
What the conditions are requried for formation of the shadow
Which type of object scale is? (opaque/ transparent/ translucent)
How to make pinhole camera?
write an activity to show light travels in straight line
What is the principle of a pinhole camera?
State three charateristics of the image formed in the pinhole camera .
Show a diagram.
why is the shadow of an object formed opposite to the direction of light source
Give the principle,construction and working of a pinhole camera.
give 4-5 examples of transparent, translucent and opaque
How To Make A Pin Hole Camera?
is cellophane opaque or transperent or translucent
We can't see the shadow of a bird or an aeroplane flying high up in the air, because:
a. the umbra doesn't fall on the ground
b. the penumbra doesn't fall on the ground
c. the umbra is very faint
d. no shadows are formed for flying objects
What is irregular reflection?
how does light help us to see things ?
in a pinhole camera why is the image formed upside down
Does the flame of gas stove emit light? Explain.
What are opeque, translusent & transparent objects
explain construction &working of a pinhole camera
Q.1 How does the light travel from one point to the other?
Q.2 Give one example of living thing which emits light ?
can you also explain the difference between convergent beam , divergent beam , parallel beam and a ray
which object reflection gives us clear images
How does a pinhole camera works ?
These objects allow light to pass through them.
These objects allow light to pass through them partially.
These objects do not allow light to pass through them.
One can clearly see through transparent objects.
One can see through translucent objects but not very clearly.
One cannot see through opaque objects.
Transparent objects do not cast shadows because they do not block light.
Translucent objects cast faint shadows as they block light partially.
Opaque objects cast dark shadows as they block light completely.
Is a wire mesh a transparent, translucent or opaque object?
Under `what curcumstances, a red shadow can be formed?
The distance between the pinhole and screen in a pinhole camera is doubled from 20 cm to 40 cm. How will it affect the image of an object kept at a distance of 20cm in front of the pinhole.
how can we make a kaleidoscope ?
can an object form two or more shadows at the same time ? How ?
what is a periscope?
What are the type of image formed in Cinema screen?
what is a periscope
what does virtual mean
under what circumstances red shadow can be formed
what are transculent object? examples plzzzzzzzzzzzzzz.......
if you are standing in an open field at 12 noon,what kind of shadow would you see of yourself?
We see the sun rising 8 1/4 minutes after it has actually risen .Why ?
how is hthe shape nad size of ashasow affected,if coloured light is used instead of white light?
A solid, transparent sphere has a small, opaque dot at its centre. When observed from outside, the apparent position of the dot will be ?
Pls give ans with explanation
A girl is 20 cm away from a plane mirror. If she moves few steps closer to the mirror, what will happen to the image size in the mirror and why ?
why are we not able to see the shadow of bird when it flying uu in the sky ? why are able
to see it when it is near to the ground?
Moon appears bright at night. Is it luminous or non- luminous body? Give reason.
how does sun get light?
what is the difference between shadow and image
why is shadow of an object formed in the direction opposite to the sideof light source?why should we not look directly at the sun through pinhole camera?
How are we able to see our face in the miror?
1). A transparent object does not form a clear shadow. Write reason
how do the rays of the sun go daigonal into the hole of the pinhole camera?
In a completely dark room if you hold up a mirror in front of you will you see the reflection of yourself in the mirror?
1). Write the differences between an image and a shadow.
is our palm (or hand) a opaque or translucent organ?? because when we take it near a torch light can pass through it patially...
so how will it be classified?
What is an optical medium? Give an example
skin is translucent transparent or opaque
and hand is translucent transparent or opaque
State 3 condition necessary for the formation of image
write the properties of shadow.
which type of object tracing paper is? (opaque/ transparent/ translucent)
how can we make a periscope
under what circumstances can a red shadow be formed?
Circle the odd one out . Give reason
handspan , cubit, metre
table, falling stone , chair
blades of fan, giant wheel , pendulum clock
air,pure water, sand
what is butter paper?
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