A fine light beam reaches the water surface of an aquarium at an
angle of 45° (Figure opposite). The refracted ray touches a
horizontal mirror at the bottom of the aquarium which reflects it
towards the surface of the water where it is refracted when passing
through the air (index n₁=1). The refractive index of water is n =
1.33. What angle is measured between the incident ray and the ray
leaving the water?
Choose the correct answer
A Fine Light Beam Reaches The Water Surface Of An Aquarium At An Angle Of 45 Figure Opposite The Refracted Ray Touch 1 (48.67 KiB) Viewed 28 times
milieu 1 = air surface de séparation rayon incident 45° milieu 2 = eau Miroir 0 0⁰ O 45° O 75⁰ 0 90° normale
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