Question

1. from rarer to denser medium.
2. from denser to rarer medium.
draw ray diagram ​

Answer 1

1. From rarer to denser medium

Hence, in a medium of greater optical density (optically denser), light will travel slower than in a medium of lower optical density (optically rarer). Therefore, when light travels from a rarer to a denser medium, its speed decreases. Therefore, the correct option is B) decreases.

2. From denser to rarer medium

When light travels from a denser medium to a rarer medium, it bends away from the normal, as illustrated to the left. This behavior follows from Snell's Law. As you saw before, the larger angle must be in the medium having the lower index of refraction.

Answer 2

Answer:

from rarer to denser medium

Explanation:

when light move from rare to medium to denser medium . After refraction it bends towards normal.

when light move from denser medium to rare medium. After refraction it bends away from normal.