Does the flame of gas stove emit light? Explain.
explain construction &working of a pinhole camera
can you also explain the difference between convergent beam , divergent beam , parallel beam and a ray
Why is an image not formed on rough surface ?
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?
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.
What are the type of image formed in Cinema screen?
Under `what curcumstances, a red shadow can be formed?
how is hthe shape nad size of ashasow affected,if coloured light is used instead of white light?
how can we make a kaleidoscope ?
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
can an object form two or more shadows at the same time ? How ?
which object reflection gives us clear images
why is the shadow of an object formed opposite to the direction of light source
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?
what is a periscope
what does virtual mean
Moon appears bright at night. Is it luminous or non- luminous body? Give reason.
under what circumstances red shadow can be formed
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?
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