How Does the Index of Refraction Affect Light Speed in Different Materials?

[Bk8907]

Speed of light. I NEED HELP! PLEASE!

Homework Statement

The index of refraction of table salt is 1.54 . What is the speed of light in table salt?

Homework Equations

The Attempt at a Solution

I NEED HELP!

 

[Integral]

Can you post the forumal for index of refraction?

 

[Bk8907]

n=c/v. there is the formula

 

[Integral]

So what is stopping you from getting the speed of light in salt?

 

[Bk8907]

yah, i just figured it out. I didn't think it would be that easy to solve. ha ha

 

[Bk8907]

new question though...

ok, so diamond has an index of refraction of 2.42. Suppose that a rectangular block of diamond is immersed in a tank of water and that a ray of light is passing through the dimaond makes an angle of incidence of 25 degrees in the diamond. What is the angle of refraction with the normal in the air?

How do I even start?