Geometrical Optics Questions

Physics

Geometrical Optics

9. [4.5 points total] An object is placed near a concave mirror. For each of the cases below, explain where the object must be placed such that the image has the given magnification (e.g. "the object must be placed at the focal point of the mirror, do = f” or “the object needs to be between the mirror and the focal point, d, <f”. If the given magnification is not possible using a concave mirror, state what kind of mirror can do this. Explain your reasoning in each case. [0.75 points] M > +1 . [0.75 points) M = +1 . [0.75 points) +1 > M > 0 [0.75 points) 0 >M> -1 . [0.75 points) M = -1 [0.75 points) -1 > M

Physics

Geometrical Optics

4. [0/1 Points] DETAILS PREVIOUS ANSWERS OSCOLPHYS2016 25.3.WA.018. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Light travels from air into a glass block with an angle of incidence in air of 36.0°. The block is then submerged in a liquid and the light now travels from air, through the liquid and into the glass. When the angle of incidence in the liquid is 21.0°, the angle of refraction in the glass is the same as when the light entered the glass from air. Determine the index of refraction of the liquid. 2.18 x See if you can obtain an expression for the index of refraction of the liquid in terms of known quantities from a statement of Snell's law for the case when light enters the glass from air and also for the case when light enters the glass from the liquid.

Physics

Geometrical Optics

5. [0/1 Points] DETAILS PREVIOUS ANSWERS OSCOLPHYS2016 25.3.WA.020. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A 45°-90°-45° prism is constructed from a synthetic resin. As shown in the figure, a light beam that enters the prism at the midpoint of the long side and parallel to the base.exits.the.prism at an angle of 20° below the horizontal. What is the index of refraction of this prism? Enter a number. Yn a figure showing all angles and established any relationships between the angles? Have you written a Snell's law statement for the light as it enters and exits the prism? Depending on how you solve the problem, you may need the identities tan a = sin a / cos a and sin(a + b) = sin a cos B u cos a sin B.

Physics

Geometrical Optics

7. [-/1 Points] DETAILS OSCOLPHYS2016 25.5.WA.033. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The index of refraction for blue light of wavelength 472 nm in a glass sample is 1.698 and for red light of wavelength 705 nm it is 1.643. If a beam containing these two colors has an angle of incidence with the glass of 30.0°, what is the angle between the two beams inside the glass? o Additional Materials Reading

Physics

Geometrical Optics

1. [-/1 Points] DETAILS OSCOLPHYS2016 25.2.WA.004. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER As shown in the figure, the angle between two plane mirrors (Mand m2) is 125°. If the incident ray strikes mirror M, with an angle of incidence 0 11 = 55°, determine the angle of reflection Ozr for mirror M2. o M2 0, 125° M

Physics

Geometrical Optics

7. [0/1 Points] DETAILS PREVIOUS ANSWERS OSCOLPHYS2016 26.5.WA.041. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER What is the angular magnification of a telescope that has a 105-cm focal length objective and a 2.27-cm focal length eyepiece? How is the angular magnification of a telescope related to the focal length of the objective and eyepiece lenses? Additional Materials Reading

Physics

Geometrical Optics

Q1. A beam of light is incident on the surface of a pool of water at an angle of 60" from horizontal surface. Use Snell's Law to determine the angle of refraction. Include a sketch of the situation and label both the incident and refracted angles on your sketch T 11

Physics

Geometrical Optics

5. [-/1 Points] DETAILS OSCOLPHYS2016 26.4.WA.031. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) What magnification is produced by a 0.150 cm focal length microscope objective that is 0.165 cm from the object being viewed? X (b) What is the overall magnification if an eyepiece that produces a magnification of 8.40x is used? Additional Materials Reading

Physics

Geometrical Optics

1A AB [5 points total] The diagram at right shows a small portion of a peacock feather. Peacock feathers are made of keratin, with an index of refraction nk = 1.54 a) [2 points] Explain why a single peacock feather appears to be multiple different colors, even though it is all made of the same keratin molecule (it is all the same pigment). V 225 mm b) [1.5 points) This part of the feather has ridges with a depth of 225 nm. What color does this part of the feather appear? Show your work and explain your reasoning,

Physics

Geometrical Optics

3. Classify each statement as True or False. :: Diffuse reflection does not follow the law of reflection. :: Only rays of light that enter the eye are seen by the eye. :: The angle of incidence is equal to the angle of reflection. The image distance for a plane mirror has the same magnitude as the object distance. .: The image formed by a plane mirror is real and forms in front of the mirror. The ray model for light is valid as long as the objects the light interacts with are smaller than 0.5 micrometers.

Physics

Geometrical Optics

O Latin 51 Quizlet M ESD Mail When people usually think about telescopes, they think about visually looking at distant objects with their eyes. But, not all telescopes use the visible portion of the electromagnetic spectrum. Some use radio waves, infrared, ... O True False

Physics

Geometrical Optics

A prism ABC of angle 30° has its face AC silvered. A ray of light incident at an angle of 45° at the face AB retraces its path after refraction at face AB and reflection at face AC. The refractive index of the material of the prism is : Silvered B C