Refractive index and speed of light

  • Thread starter 3instein
  • Start date
  • #1
3instein
2
0

Homework Statement



A slab of glass has a refractive index of 1.3. What will be the speed of light in this glass?

Homework Equations





The Attempt at a Solution



[tex]\frac{sin i}{sin r}=1.3[/tex]

?
 

Answers and Replies

  • #2
Chi Meson
Science Advisor
Homework Helper
1,874
10
Wrong equation. If you knew what this equation was, youwould know that you can't use it. The "i" and "r" are referring to angles, and are any angles given?

Try the equation that defines the index of refraction, n .
 
  • #3
scivet
12
0
light speed in the media = c/n
 
  • #4
Redbelly98
Staff Emeritus
Science Advisor
Homework Helper
Insights Author
12,150
169
Welcome to Physics Forums scivet!

We try to give hints to people, rather than giving the answer, when it's a homework question.

But since the question is from last semester, no harm done!
 

Suggested for: Refractive index and speed of light

Replies
6
Views
398
  • Last Post
Replies
6
Views
625
Replies
3
Views
500
Replies
4
Views
464
Replies
5
Views
551
  • Last Post
Replies
2
Views
834
Top