Answer:
Angle of Refraction = 28.9 degrees
Explanation:
We'll use Snell's law for this. It's mathematical form is:
=> [tex]n_1* sin(\alpha _1)=n_2 * sin(\alpha _2)[/tex]
Where [tex]n_{1} = 1, n_{2} = 1.33, \alpha _{2} = 40^o[/tex]
=> [tex]n_{1}[/tex] and [tex]n_{2}[/tex] are the refractive indexes of the air and water respectively.
Solution:
=> 1 * sin (40) = 1.33 * sin([tex]\alpha _{2}[/tex])
=> sin [tex]\alpha _{2}[/tex] = [tex]\frac{sin 40^0}{1.33}[/tex]
=> sin [tex]\alpha _{2}[/tex] = 0.4821
=> [tex]\alpha _{2}[/tex] = 28.9 degrees
