Fermat's Principle of Least Time

Q. When a ray of light enters a denser medium from a rarer medium:

1. It does not bend
2. It always gets reflected
3. It bends towards the normal
4. It bends away from the normal

Q.

If 3 parallel rays fall on an irregular reflecting surface then how many reflected rays do we get?

1. Less than 3

2. Exactly 3

3. Cannot say

4. Greater than 3

Q. When a ray of light enters a denser medium from a rarer medium:

1. It bends towards the normal
2. It does not bend
3. It always gets reflected
4. It bends away from the normal

Q. When a ray of light enters a denser medium from a rarer medium:

1. It bends towards the normal
2. It bends away from the normal
3. It always gets reflected
4. It does not bend