0.76 ns does it take light incident perpendicular to the glass to pass through this 6.4 cm -thick sandwich.
<h3>What is refractive index?</h3>
The measurement of how much a light beam bends as it travels through different media is called the refractive index. It may alternatively be described as the relationship between the speed of a light ray in a material and the speed of a light ray in a vacuum, or n = c/v.
The more distorted the light is, the slower it moves through the medium, and ultimately, the more effective the refraction is, the higher the index number. A higher index score for eye wear use indicates that less material is required to get the desired effect.
when light goes in a medium,its velocity reduces to c/u (where c = velocity of light, u = refractive index)
since, light ray is incident perpendicular,there would be no refraction
total time taken will be (time=distance/speed)
t = 0.052/(3 × 10⁸/3.2) + 0.014/(3 × 10⁸/1.4) + 0.023/(3 × 10⁸/1.8)
t = 0.76 ns
To know more about light incident refer to:
brainly.com/question/15838784
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