- #1
Marcargo
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Homework Statement
A small light is 22.0 cm below the surface of a liquid of refractive index 1.50. Viewed from above, the light appears to illuminate a circle on the surface of the water. What is the diameter of the circle?
cm
Homework Equations
Snell's Law
n1sin(θ)1 = n2sin(θ)2
The Attempt at a Solution
Based on Snell's law:
1.6 x 1 = 1 x sinθ, if I can find the angle of refraction, then maybe I can find the diameter of the circle with trigonometry?
I can't really see a way through this one - I'm thinking that I want to find the 'radius' of the circle, and from there, find the diameter. Maybe the distance that the light is used below the circle can be then used as a side for trigonometry to find the radius?