θ2 = sin-1((η1sinθ1)/η2) = sin-1((1sin40.0)/(1.52)) = 25.0°
The figure on the right represents a ray of light passing from air through crown glass (which has index of refraction n = 1.52) into water, such as light beam entering a fish tank through its glass wall.
Calculate the distance the ray is displaced, in millimeters, by the glass, given that the incident angle is 40.0° and the glass is 0.95 cm thick. Take 1.52 for the index of refraction for crown glass
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