Theories of Light

Question 1

What is particle theory?

Answer 1

Light acts like a particle (photons) and travels in straight lines

Question 2

What is Huygens principle?

Answer 2

Light moves in a wave, outwards in a circle from the source, creating smaller wavelets as it moves

Question 3

What is the formula for refractive index?

Answer 3

n = c/speed of light in the material

Question 4

What is the dioptric equivalent of 25cm?

Answer 4

4D

Question 5

What is the dioptric equivalent of 33cm?

Answer 5

3D

Question 6

What is the dioptric equivalent of 10cm?

Answer 6

10D

Question 7

What is the dioptric equivalent of 4m?

Answer 7

0.25D

Question 8

What is the dioptric equivalent of 1m?

Answer 8

1D

Question 9

What is the dioptric equivalent of 50cm?

Answer 9

2D

Question 10

What is the dioptric equivalent of 16cm?

Answer 10

6D

Question 11

What is the dioptric equivalent of 66cm?

Answer 11

1.50D

Question 12

What is the dioptric equivalent of 2m?

Answer 12

0.50D

Question 13

What is the dioptric equivalent of 40cm?

Answer 13

2.50D

Question 14

What is the dioptric equivalent of 12.5cm?

Answer 14

8D

Question 15

What is the dioptric equivalent of 1.33m?

Answer 15

0.75D

Question 16

What is the dioptric equivalent of 20cm?

Answer 16

5D