Optics

Question 1

Red

Answer 1

650-750

Question 2

Orange

Answer 2

592-650

Question 3

Yellow

Answer 3

560-592

Question 4

Green

Answer 4

500-560

Question 5

Blue

Answer 5

446-500

Question 6

Violet

Answer 6

400-446

Question 7

Conventions for light rays

Answer 7

Travel from left to right
Travel away from the source
Can be acted upon by mirrors, lenses and prisms

Question 8

Index of refraction
Glass

Answer 8

1.523

Question 9

Air

Answer 9

1.00

Question 10

Cornea

Answer 10

1.376

Question 11

CR39

Answer 11

1.50

Question 12

Polycarbonate

Answer 12

1.586

Question 13

Trivex

Answer 13

1.53

Question 14

Crown glass

Answer 14

1.53

Question 15

Converging lenses

Answer 15

Plus lenses
Convex lens (base to base)

Question 16

Diverging lenses

Answer 16

Minus lens
Concave lens (apex to apex?

Question 17

Minus space

Answer 17

In front of lens

Question 18

Plus space

Answer 18

Behind the lens

Question 19

Real imagie

Answer 19

Plus/convex

Question 20

Virtual image

Answer 20

Minus/concave

Question 21

Focal length formula

Answer 21

D=1/f

Question 22

Surface power formula

Answer 22

F1=n’-n/r

Question 23

Nominal power formula

Answer 23

Ft=f1+f2

Question 24

Spherocylinder approximation

Answer 24

F0= FcylSin^2°+Fsph

Question 25

Prentices formula

Answer 25

P=cD
P=cF

Question 26

Sagittal depth formula

Answer 26

Sag=r squareroot r2-(d/2)^2

Question 27

Approximate sag formula

Answer 27

Sag= (d/2)^2D/2000(n-1)

Question 28

Vergence power of lens

Answer 28

U+P = V

Question 29

Distance of the object from the lens

Answer 29

U=1/u

Question 30

Distance of the image from the lens

Answer 30

V=1/v

Question 31

T/F
Light travels slowest in crown glass

Answer 31

True