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Q: Why are opaque objects considered to have refractive indices?
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What is the index of refraction of sugar?

Crystaline sugar (sucrose) has a refractive index of around 1.56. Sugar solutions can have refractive indices greater than this. Note, that the refractive index of a substance can even be determined for opaque substances. This is because the RI also determines reflective properties. So by measuring the amount of light reflected by light shining on a polished sample at a given angle, a refractive index can in principle be obtained.


What is the refractive index of fog?

Fog is made out of water droplets in suspension in the air. The refractive index of these droplets is 1.3330. However the body of fog as seen on mass is opaque (enough of it will stop light) and opaque substances do not have a refractive index.


Can we calculate the refractive index of an opaque solid body?

Vuvuzellas poo


Colors of opaque objects?

colors of opaque object


Are all light reflectors opaque?

are all opaque objects reflectors


What process produces different colors we see in opaque objects?

what processes produce the different colors we see in opaque objects


What are three opaque objects that stop or absorb light?

A rock, a tree and a dog are three opaque objects that stop or absorb light


Can light be reflected off all types of objects?

No, not objects that are opaque.


Why do opaque objects make clearer shadows?

they form clearer objects


When light rays are blocked by an object you can see the objects what?

These objects are opaque.


Do opaque object absorbs all the incident light on it?

Be careful not to confuse: Opaque objects are those that do not allow light to pass through it, but they can reflect light. It is BLACK objects that absorb all the incident light on it. To conclude, opaque objects do not necessarily absorb all the incident light on them but black objects ABSORB all the incident light on them (and are, of course, opaque)


Describe the difference between an opaque object and a transparent object?

The basic difference between an opaque and a transparent object is that we can see through the transparent objects while through the opaque objects, we cannot see.