When light goes from one material into another material having a HIGHER index of refraction , E) its speed and wavelength decrease, but its frequency stays the same.
<h3>Further explanation</h3>
<em>Let's recall </em><em>Snell's Law</em><em> about </em><em>Refraction </em><em>as follows:</em>
<em>where:</em>
<em>n₁ = incident index</em>
<em>θ₁ = incident angle</em>
<em>n₂ = refracted index</em>
<em>θ₂ = refracted angle</em>
<em>In this problem, we will use this following formula:</em>
<em>where:</em>
<em>n₁ = incident index</em>
<em>v₁ = incident speed</em>
<em>n₂ = refracted index</em>
<em>v₂ = refracted speed</em>
From above formula we could conclude that the speed of light is inversely proportional to the index of refraction. Therefore, when light goes from one material into another material having a HIGHER index of refraction , its speed will decrease.
<em>As we know that :</em>
Speed of light is directly proportional to the wavelength of light.
If the speed of light decreases , then wavelength of light will also decrease.
<h3>Conclusion:</h3>
When light goes from one material into another material having a HIGHER index of refraction , E) its speed and wavelength decrease, but its frequency stays the same
<h3>Learn more</h3>
<h3>Answer details</h3>
Grade: High School
Subject: Physics
Chapter: Light