Question

Problem 4:  You can determine the index of refraction of a substance by measuring its critical angle for total internal reflection.

Randomized Variables:  Θ_c,w = 65.2°

Part (a) What is the index of refraction of a substance that has a critical angle of 65.2° when submerged in water (with index of refraction 1.333)?
Numeric   : A numeric value is expected and not an expression.
n₁ = __________________________________________


Part (b) What would the critical angle be for this substance in air?
Numeric   : A numeric value is expected and not an expression.
Θ_c,a = __________________________________________

Answer 1

suppose critical angle =0c chen refractive inden (n) ㅗ Sinod li- Here Ms - Sin@cw Ms= Mw sinc, w Ms= 1.333 Sin 65.2 Ms=103338 0.9077 or(n = loa) Ms=1.2) repactive inden of substance, b) If in air then ㅗ ha=1 hi ha Sinoca so Sino, a = 0.826 so/oc,a=55.73°