5.3 reflection and Refraction

Question 1

Light obeys what law?

Answer 1

The law of reflection

Question 2

Refraction

Answer 2

The changing of direction or bending of a ray as it passes from one medium to another. Cause by a sudden change in speed as the waves pass from one medium to another.

Question 3

When speed decreases

Answer 3

The rag bends to the normal

Wave is faster in medium 1

Refractive index of medium 1 is less than 2

Question 4

When speed increases

Answer 4

Bends away from the normal

Wave is slower in medium 1

Refractive index of 1 is greater than 2

Question 5

Critical angle

Answer 5

The angle of the incident ray that causes the refracted ray to be 90 degrees relative to the normal line.

Question 6

When does total internal reflection occur?

Answer 6

When the incident ray is at an angle greater than the critical angle and it goes from a high index of refraction. To a low index of refraction s