Answer:
Explanation:
Given that,
The Refractive index of glass is
n(ice) = 1.31
The refractive index of water is
n(water) = 1.33
What is the critical angle?
From water to ice
Critical angle is given as.
Using Snell's Rule.
Sin( θc ) = n1 / n2
for total internal reflection the incident ray is always in the denser medium! So, water is the more denser than ice.
Then, .
Sin( θc ) = n(ice) / n(water)
Sin( θc ) = 1.31 / 1.33
Sin( θc ) = 0.98496
θc = arcSin(0.98496)
θc = 80.05°
The critical angle is 80.05°
