A light moves from denser to rarer medium. Which the following is correct ?

Question

A light moves from denser to rarer medium. Which the following is correct ? (A) Energy increases (B) Frequency increases (C) Phase change by 90°  (D) Velocity increases

Tardigrade Admin · Accepted Answer

When a ray of light moves from one 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 the following is correct ?

Energy increases

Frequency increases

Phase change by $9 0^{\circ}$

Velocity increases

When a ray of light moves from one 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 the following is correct ?

Energy increases

Frequency increases

Phase change by 90∘

Velocity increases

When a ray of light moves from one 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.

Phase change by $9 0^{\circ}$