The speed of light in a prticular ype of glass is 1.68x10^8 m/s. What is the index of refraction of the glass?

I don't understand if how to solve this problem. Do you put an index of refraction of glass that you know or are you solveing for glass that you don't know?

index=speedlightspace/ speedlightinglass

where the speed of light in free space is
3x10^8m/s

Hey well i just wanted to say that i am having to do this in class but i do not get it if you can plz send me some of your tips of what i can do yhankyou

First, if you have a question, it is much better to put it in as a separate post <Post a New Question> rather than attaching it to a previous question, where is more likely to be overlooked.

I am not sure what "this" refers to. If it applies to the original question, just divide the speed of light in space by the speed of light in glass. If not, please state your question in a separate post.

I hope this helps. Thanks for asking.

To solve this problem, you need to use the formula for the index of refraction, which is:

index of refraction = speed of light in vacuum / speed of light in the medium

In this case, the speed of light in vacuum (free space) is given as 3x10^8 m/s, and the speed of light in the specific type of glass is given as 1.68x10^8 m/s.

Plugging these values into the formula, you get:
index of refraction = (3x10^8 m/s) / (1.68x10^8 m/s)

To simplify this calculation, you can cancel out the units of "m/s" in the denominator and numerator, leaving just:
index of refraction = 3 / 1.68

Calculating the result, you get:
index of refraction ≈ 1.79

So, the index of refraction of the glass is approximately 1.79.

Remember, the index of refraction is a dimensionless quantity, so it doesn't have any units.