A light moves from denser to rarer medium, which of the following is correct?

Question

A light moves from denser to rarer medium, which of the following is correct? (A) Energy increases (B) Frequency increases (C) Phase changes by 90% (D) Velocity increases

Tardigrade Admin · Accepted Answer

When a ray of light moves from the medium to other, its velocity changes. This change depends on refractive index of the medium.
Light travels from denser to rarer medium,
i.e., from medium of higher refractive index to lower refractive index.
So, in second (rarer) medium, its velocity increases.

Q. A light moves from denser to rarer medium, which of the following is correct?

Energy increases

Frequency increases

Phase changes by 90%

Velocity increases

When a ray of light moves from the medium to other, its velocity changes. This change depends on refractive index of the medium. Light travels from denser to rarer medium, i.e., from medium of higher refractive index to lower refractive index. So, in second (rarer) medium, its velocity increases.

When a ray of light moves from the medium to other, its velocity changes. This change depends on refractive index of the medium.
Light travels from denser to rarer medium,
i.e., from medium of higher refractive index to lower refractive index.
So, in second (rarer) medium, its velocity increases.