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Mama L [17]
3 years ago
14

A camera lens with index of refraction greater than 1.30 is coated with a thin transparent film of index of refraction 1.25 to e

liminate, by destructive interference, the reflection of light at wavelength λ. the light is incident perpendicularly on the lens. in terms of λ, what minimum film thickness is needed?
Mathematics
1 answer:
Svetlanka [38]3 years ago
7 0
I would not know the answer to this question sorry
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Claire's music playlist contains songs she bought and songs her mother bought. The ratio of her songs to her mother's songs is 3
Vsevolod [243]

Answer:

B.

Step-by-step explanation:

The ratio of Claire's songs to her mother's songs = 3 : 2

A.

3 : 2 = 3/2

9 : 6 = 9/6 = 3/2

12 : 10 = 12/10 = 6/5

B.

3 : 2 = 3/2

6 : 4 = 6/4 = 3/2

15 : 10 = 15/10 = 3/2

C.

3 : 2 = 3/2

4 : 3 = 4/3

5 : 4 = 5/4

D.

3 : 2 = 3/2

4 : 6 = 4/6 = 2/3

20 : 30 = 20/30 = 2/3

The table which shows the correct ratio and two equivalent ratios is B

7 0
3 years ago
Zane spent $1.50 more than Taylor
Virty [35]
How much does Taylor has?
8 0
3 years ago
Lisa wants to cover the top of the lid in beads. She has enough beads to cover 42 square centimeters. Find the area of the lid.
Free_Kalibri [48]
Well this depends on the the the size of the cover
6 0
3 years ago
Eight people audition for a choir. The choir director must choose one soprano, one altar and one soprano. In how many ways can t
Trava [24]
There are 72 different ways the director can fill the positions.

(1+2+3+4+5+6+7+8) x 2


You multiply it by 2 because there are going to be 4 other people who will not have a position, and 8/4 is 2.
4 0
3 years ago
Read 2 more answers
Find the surface area and volume of a cylinder with a diameter equal
dangina [55]

Answer:

Volume = 1539.38 cm³

Surface Area = 747.7 cm²

Step-by-step explanation:

Volume = πr² h

V = π(7)²(10)

V = π(49)(10)

V = 490π

V = 1539.38 cm³

Surface Area = 2πrh + 2πr²

SA = 2π(7)(10) + 2π(7)²

SA = 2π(70) + 2π(49)

SA = 140π + 98π

SA = 238π

SA = 747.7 cm²

8 0
2 years ago
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