PLEASE ANSWE ALL !! 1. A soap bubble is 86 nm thick and illuminated by white light incident perpendicular to its surface

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PLEASE ANSWE ALL !!
1. A soap bubble is 86 nm thick and illuminated by white
light incident perpendicular to its surface. What wavelength of
visible light is most constructively reflected, assuming the same
index of refraction as water (about 1.33)? (If you were looking at
this soap bubble it would appear to be a color associated with this
wavelength.)
2. Suppose you have a glass lens system that is to be used
primarily for 472-nm light. What is the second thinnest coating of
fluorite (magnesium fluoride) that would be non-reflective for this
wavelength? (Hint: you'll need to look up the indices of
refraction in your textbook.)
3. Polarized light is incident on a polarizing
filter. After passing through the filter, the intensity of
the light has been reduced by a factor of 2.4. What is the
angle between the axis of the polarizing filter and the axis of the
incident light?
4. A scuba diver sees light reflected from the water’s
surface. At what angle will this light be completely
polarized?
If the scuba diver were observing water reflecting from a lake
of water of VENUS (where the atmosphere is predominantly carbon
dioxide), the answer to the question above would change in what
way?
Group of answer choices
The angle would be slightly higher.
The angle would be slightly smaller.
The answer would be exactly the same.
None of the above. (also, I am bad at logic.)
5. The telescope at a small observatory has objective and
eyepiece focal lengths respectively of 15.9 m and 9.63 cm.
What is the angular magnification of this telescope?
6. Two lenses are placed a distance of 20.0 cm apart.
The leftmost lens is a converging lens with a focal length of 9 cm
while the seconds lens is a diverging lends with a focal length of
12. If an object is placed 7 cm to the left of the converging lens,
determine the magnification of the two lenses combined.
7. What power contact lens is needed to correct the vision
of a person who has a near point of 54.3 cm and allow him to see
objects 25.0 cm away?
Is this person nearsighted or farsighted?
8. An office administrator realizes that she is having
trouble doing her work due to eyesight problems. Her optometrist
determines that without glasses she can focus clearly only on
objects that lie at distances between 0.541 m and 4.40 m. The
optometrist decides that the best way to handle her eyesight
problems is to prescribe bifocals that will give her normal visual
acuity from 25.0 cm out to infinity. After trying on several pairs
of glasses frames, they agree that the glasses will be a distance
of 2.5 cm from her eyes.
a) Determine the refractive power needed for the bifocal part
that will correct for her farsightedness (include the sign)
What will the refractive power needed for the part of her
bifocal that will correct her nearsightedness?
9. If when an object is placed 25.1cm in front of a mirror
the image is located 12 cm behind the mirror, determine the focal
length of the mirror.
Is the mirror in the previous question convex or concave?