- #1
jegues
- 1,097
- 3
Homework Statement
See figure attached for problem statement.
Homework Equations
The Attempt at a Solution
Using Snell's Law,
[tex]n_{1}sin(\theta_{1}) = n_{2}sin(\theta_{2})[/tex]
[tex] n_{1} = \frac{n_{2}sin(\theta_{2})}{sin(\theta_{1})}[/tex]
Where,
[tex]\theta_{1} = 30^{o}, \theta_{2} = 90^{o}[/tex]
It gives me, [tex]n_{1} = 2[/tex] but the answer is a minimum of 1.15.
What did I do wrong/misunderstand?