EP Quiz 5

Description

Engineering Quiz on EP Quiz 5, created by Dustin Wilson on 13/12/2018.
Dustin Wilson
Quiz by Dustin Wilson, updated more than 1 year ago
Dustin Wilson
Created by Dustin Wilson about 6 years ago
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Resource summary

Question 1

Question
is parker cute?
Answer
  • duh
  • yes
  • Definitely no

Question 2

Question
What is “the image distance for an object placed at infinity” for a lens or a mirror?
Answer
  • Focal Length
  • Radius of Curvature
  • Transverse Magnification
  • Near Point

Question 3

Question
A particular image of a real object (object distance > 0) produced by an optical device has a transverse magnification Mt = −2. Which pair of image characteristics below is not consistent with this value?
Answer
  • Real and Inverted
  • Virtual and Enlarged
  • Inverted and Enlarged

Question 4

Question
If you take a picture of yourself with your phone’s camera while standing 2 m in front of of a focal length f = −2 m mirror, the camera will adjust itself to focus on an object how far away from it?
Answer
  • 1 m
  • 2 m
  • 3 m
  • 4 m

Question 5

Question
What does your eye adjust to produce sharp images of objects arranged at many different distances in front of it?
Answer
  • Pupil diameter
  • Lens index of refraction
  • Lend radius
  • Lens-retina distance

Question 6

Question
What property of light does not change as a laser pointer’s beam passes from air into water?
Answer
  • Wavelength
  • Speed
  • Color
  • Intensity

Question 7

Question
Suppose a single beam of green light(h = 510 nm) is split into equal amplitude components by having the light pass through two narrow slits. The intensity of either component by itself on a viewing screen(measured by covering the other component’s slit) is Io = 25 mW/m2. What is the intensity of both components together if the light from one slit travels 6885 nm further than that from the other slit?
Answer
  • 0
  • 25 mW/m^2
  • 50
  • 100

Question 8

Question
The same setup is used as in the previous question except this time the green laser is swapped out for a red (theta = 650 nm) laser with the same power. What is the intensity of light in the "forward direction"' i.e., for theta= 0, on the viewing screen?
Answer
  • 0 mW/m^2
  • 25
  • 50
  • 100

Question 9

Question
How does the distance of separation between bright dots using the green laser, delta yG compare to the separation using the red laser, delta yR Hint: angles are generally quite small for this application, so sin theta ~ tan theta ~ theta.
Answer
  • yG/yR = .78
  • 1
  • 1.27
  • 1.62

Question 10

Question
KMAN, the flagship radio station of the K-State Sports network, broadcasts at a frequency of 1350 kHz. What is the wavelength of KMAN's electromagnetic radio wave signal?
Answer
  • 4.5 mm
  • 4.09 km
  • 222 m
  • .24 mm

Question 11

Question
A piccolo produces high pitch sounds mainly because of?
Answer
  • Small size
  • Higher speed of sound inside piccolo
  • Wide volume range
  • Played by smaller people

Question 12

Question
The optical analog of a loud piccolo would be?
Answer
  • A bright red laser
  • A dim violet laser
  • A dim red laser
  • A bright violet laser

Question 13

Question
Sound and light waves both exhibit all but one of the behaviors below. Which is the odd one out?
Answer
  • Refraction
  • Polarization
  • Reflection
  • Diffraction

Question 14

Question
Intensity is proportional to (amplitude)^2, and it decreases with separation from the source as 1/(distance)^2. Which types of waves follow these behaviors?
Answer
  • Light and sound
  • Only sound
  • Only light
  • Neither

Question 15

Question
Initially unpolarized light passed through three successive high quality Polaroid sheets. Sheets 2 and 3 have axes of polarizations with respect to that of the first polarizer of 45◦ and 90◦, respectively. What fraction of the initial intensity passes through all three sheets?
Answer
  • 0
  • 1/2
  • 1/4
  • 1/8

Question 16

Question
Similar to the previous question, initially unpolarized light passed through three successive high quality Polaroid sheets. This time the order of sheets 2 and 3 is flipped; and they have axes of polarizations with respect to that of the first polarizer of 90◦ and 45◦, respectively. What fraction of the initial intensity passes through all three sheets?
Answer
  • 0
  • 1/2
  • 1/4
  • 1/8

Question 17

Question
When you view the legendary Peter Nelson as the object shown in picture (A) at a distance from your eyes that is greater than the positive focal length of their converging lenses, the actual real images produced on their retinas is closest to which picture?
Answer
  • A
  • B
  • C
  • D

Question 18

Question
Fiber optic cables can transmit information at a much higher rate than can be sent over copper wires. The property of light most important for this feature is its?
Answer
  • Frequency
  • Propagation speed
  • Polarization
  • Intensity

Question 19

Question
The physical phenomenon that enables the fiber optic technology is total internal reflection. This occurs when?
Answer
  • Light from a low index of refraction material tries to refract into a higher index material at a small angle of incidence with respect to the optic axis.
  • Light from a high index of refraction material tries to refract into a lower index material at a small angle of incidence with respect to the optic axis.
  • Light from a low index of refraction material tries to refract into a higher index material at a large angle of incidence with respect to the optic axis.
  • Light from a high index of refraction material tries to refract into a lower index material at a large angle of incidence with respect to the optic axis.
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