Is it correct to say that solutions are translucent or partially transparent ? If yes,then why?
Answers
Transparent materials are those objects which allow light to pass through them in straight lines. As a result we can see the objects clearly. Example: - Plane mirror, water.
Translucent materials are those which let some light to pass through them, the light rays get scatter in all directions, so cannot see clearly through them. Example: - Fog, smoke.
Luminous objects are those which emit light on their own. Example:-Sun, firefly.
Non-luminous objects are those which reflect the light from luminous bodies. Example: - Moon, mirror.
Based on the above definitions we can classify the objects as opaque, transparent, translucent, luminous and non-luminous.
Opaque: A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, an umbrella, a wall, a sheet of carbon paper, a sheet of cardboard.
Transparent: Air, water, a sheet of plane glass.
Translucent: A sheet of polythene, smoke, fog, a sheet of cellophane, a wire mesh.
Luminous: A piece of red hot iron, a lighted fluorescent tube, the flame of a gas burner, a lighted torch, sun, firefly, kerosene stove.
Non – luminous: Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, an umbrella, a wall, a sheet of carbon paper, a sheet of cardboard, a sheet of cellophane, a wire mesh, kerosene stove, moon.
Question 3.
Can you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?
Answer :
The shadow obtained from a cylinder can be either rectangular or circular it depends upon which face of the cylinder is facing the sunlight.
Physics Light Shadow
Question 4.
In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
Answer:
No we will not be able to see our reflection in the mirror in a completely dark room.
Image is formed by a mirror due to the reflection of light from any object.
But in case of a completely dark room there is no light so no reflection as a result no image is formed.
the type of chemical is reruired