Session 5

Question 1

How does light travel?

Answer 1

In waves or particles

Question 2

What is a rare/light medium?

Answer 2

It is the medium with less resistance

Question 3

What is a dense medium?

Answer 3

It is the medium with more resistance

Question 4

What is refractive index?

Answer 4

The number used to represent how the medium interacts with light.
Lower the refractive index = slows light less than high

Question 5

Which medium is less resistant?

Answer 5

The rarer medium is less resistant

Question 6

Which medium is more resistant?

Answer 6

The denser medium is more resistant

Question 7

Refractive index of CR-39 Plastic?

Answer 7

1.498

Question 8

Refractive index for Crown Glass

Answer 8

1.523

Question 9

Refractive index for Trivex

Answer 9

1.532

Question 10

Refractive index of Polycarbonate?

Answer 10

1.586

Question 11

Refractive index of air?

Answer 11

1.00

Question 12

Refractive index of water

Answer 12

1.33

Question 13

When does light bend away from the Normal?

Answer 13

When passing from a dense medium to a rarer medium

Question 14

When does light bend towards the normal?

Answer 14

When passing from a rare medium to a denser medium

Question 15

What is the angle of deviation?

Answer 15

The amount the light has deviated from its original path.

Question 16

Where do we measure the angle of deviation from?

Answer 16

Normal to Original line of path.
(See diagram)

Question 17

When is this formulae used? d=i-i’

Answer 17

When going from rarer to denser medium

Question 18

When is this formulae used? d=i’-i

Answer 18

When going from denser to rarer medium

Question 19

Do 5 examples of Snell’s Law and Angle of Deviation