Question

If a ray of light is traveling along the normal from a denser medium to a rarer medium –

will there be any refraction?​

Answer 1

Answer:

No, there will be no refraction.

Explanation:

As we know that refractive index is calculated to find the density of medium. If density is low, it means light rays will travel faster but when density is high, light rays will travel slower.

We have formula for finding refractive index:

$\bf\Longrightarrow \dfrac{sin\: I}{sin\: r}=constant$

But when light falls on surface along normal, there will be no angle of incidence and so no angle of refraction.

Since there will be no angle of refraction, light will travel along normal without any refraction no matters what the density of medium is.