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

a)

Energy increases

b)

Frequency increases

c)

Phase changes by

d)

Velocity increases



Question ID - 152821 | SaraNextGen Top Answer

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

a)

Energy increases

b)

Frequency increases

c)

Phase changes by

d)

Velocity increases

1 Answer
127 votes
Answer Key / Explanation : (d) -

(d)

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,  from medium of higher refractive index to lower refractive index. So, in second (rarer) medium, its velocity increases.

127 votes


127