Quiz 1

Question 1

Label the following lens diagram as to lens design.

(select the correct response)

meniscus

periscopic

myopic plus

hyperopic minus

Answer 1

meniscus

Question 2

Using the Nominal Lens Power formula, calculate the total lens power having a front surface curve of +6.00 and a back surface curve of -3.00.

Answer 2

+3.00

Question 3

Label the following lens diagram as to lens design.

meniscus convex

meniscus concave

periscopic convex

periscopic concave

Answer 3

periscopic concave

Question 4

The index of refraction of crown glass is:

Answer 4

1.523

Question 5

Label the following lens diagram as to lens design and nominal power.

meniscus cc/-4.00

periscopic cc/-4.00

meniscus cx/+4.00

periscopic cx/+4.00

Answer 5

meniscus cc/ -4.00

Question 6

Label the following lens diagram as to lens design and nominal power.

pl cc/-2.75

pl cx/-2.75

pl cc/plano

pl cx/plano

Answer 6

pl cc/ -2.75

Question 7

Label the following lens diagram as to lens design.

meniscus convex

meniscus concave

periscopic convex

periscopic concave

Answer 7

periscopic convex

Question 8

Label the following lens diagram as to lens design and nominal power.

equiconcave/+6.00

equiconvex/+6.00

meniscus cc/-6.00

meniscus cx/-6.00

Answer 8

equiconvex/ +6.00

Question 9

Define the Nominal Lens Power Formula

F2 + F1 = F Total

F1 + F2= F Total

F Total= F1 - F2

Answer 9

F1 + F2 = F Total

Question 10

What contribution did Ben Franklin give to the optical profession?

Answer 10

invented bifocal lenses