PhysicsLAB: Refraction Phenomena

PhysicsLAB

Worksheet
Refraction Phenomena

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1. What is the wavelength of green light, λ = 500 nm in a vacuum, while it is traveling through a diamond, n = 2.4?

125 nm208 nm407.6 nm1200 nm

2. What is the frequency of the green light in question #1?

1.4 x 10¹⁵ hz1.7 x 10¹⁴ hz
2.1 x 10¹⁵ hz6 x 10¹⁴ hz

3. When white light passes through a triangular prism, which color is least deviated - that is, which color travels the fastest through glass?

greenorangeredvioletyellow

4. If the index of refraction for green light in glass is 1.510 and for violet light is 1.523, what is the angular dispersion between the rays of these two wavelengths when emerge from the prism shown below? (Draw a diagram showing how the light travels through the prism.)

triangularprismdispersion.gif (2253 bytes)

0.5712º0.755º0.7615º

5. What is the critical angle if light traveling in glass (n = 1.5) is submerged in water (n = 1.33)?

62.5 º48.8º41.8ºno critical angle exits for this combination

6. If the external medium remains constant, as a substance's index of refraction increases, the critical angle decreases.

TrueFalse

7. Which of the following does NOT occur when light enters a less optically dense medium?

its wavelength lengthens
its frequency increases
its average speed increases
if it enters the medium obliquely, the angle of refraction is greater than its angle of incidence - it bends away form the normal

8. Light can no longer escape from an optically dense medium into air once it reaches an angle of incidence within the medium equal to or greater than 30º. What is the index of refraction for this medium?

2.72.01.91.7

9. Calcite crystals display two distinct indices of refraction and therefore two distinctly transmitted images (one along the ordinary ray and the other along the extraordinary ray). These crystals are part of a family of minerals called birefringent materials.

image courtesy of

Foto-Laboratory University of Pisa

When a polarizer is rotated above the crystal shown above,

both lines always remain visible.
it alternates in such a way that only one line is viewable within each 180º arc.
it alternates between neither line being visible or both lines being visible.

10. In an optical fiber, light actually

image courtesy of
Dr. Joseph Alward, University of the Pacific

curves in a direct parallel to the central axis of the fiber
travels in straight line segments between bounces
travels along the outer surface of the fiber causing it to glow
any of the above could happen depending on the type of fiber being utilized

11. Atmospheric refraction would make the total amount of daylight time available a bit

images courtesy of
Dr. Joseph Alward, University of the Pacific

longer
shorter
longer in the summer but shorter in the winter

12. A mirage is a result of atmospheric

image courtesy of
Dr. Joseph Alward, University of the Pacific

aberrationreflectionrefractionresonancescattering

13. Which of the following does NOT contribute to the formation of a rainbow?

image courtesy of
Dr. Joseph Alward, University of the Pacific

light is internally reflected in the water drops
there is destructive interference between the reflections off the front and back surface of the rain drops causing only one color to be seen from each drop
light is dispersed during refraction while exiting from the water drops
the sun must be behind you at the same time that the raindrops are in front of you
the sky is bright under each rainbow where thousands of overlapping rainbows combine to form a "white glow"

14. True or False. In order for a person to view a rainbow, he only needs one raindrop since every raindrop disperses all of the colors in the spectrum.

TrueFalse

15. The critical angle for a transparent medium is the minimum angle at which all light within the material is totally internally

refractedreflectedabsorbeddisperseddiffused

16. Refraction causes the bottom of a swimming pool to appear

shallower than it physically is
deeper than it physically is
at exactly the depth specified in the pool contractor's building plans

17. When viewed from above, how deep would a coin resting in the bottom of a pan of water 20 cm deep, appear be?

25 cm20 cm15 cm10 cm5 cm

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Resource Lesson:	RL - A Derivation of Snell's Law RL - Converging Lens Examples RL - Converging Lenses RL - Demonstration: Infinite Images RL - Demonstration: Real Images RL - Demonstration: Virtual Images RL - Dispersion RL - Diverging Lenses RL - Double Lens Systems RL - Lensmaker Equation RL - Mirror Equation RL - Properties of Plane Mirrors RL - Refraction of Light RL - Refraction Phenomena RL - Snell's Law RL - Snell's Law: Derivation RL - Spherical Mirrors RL - Thin Lens Equation
Review:	REV - Drill: Reflection and Mirrors REV - Mirror Properties REV - Physics I Honors: 2nd 9-week notebook REV - Physics I: 2nd 9-week notebook REV - Spherical Lens Properties
Worksheet:	APP - Enlightened APP - Reflections APP - The Librarian APP - The Starlet CP - Lenses CP - Plane Mirror Reflections CP - Refraction of Light CP - Snell's Law CP - Snell's Law NT - Image Distances NT - Laser Fishing NT - Mirror Height NT - Mirror Length NT - Reflection NT - Underwater Vision WS - An Extension of Snell's Law WS - Basic Principles of Refraction WS - Converging Lens Vocabulary WS - Diverging Lens Vocabulary WS - Lensmaker Equation WS - Plane Mirror Reflections WS - Refraction and Critical Angles WS - Refraction Through a Circular Disk WS - Refraction Through a Glass Plate WS - Refraction Through a Triangle WS - Snell's Law Calculations WS - Spherical Mirror Equation #1 WS - Spherical Mirror Equation #2 WS - Spherical Mirrors: Image Patterns WS - Thin Lens Equation #1: Converging Lenses WS - Thin Lens Equation #2: Converging Lenses WS - Thin Lens Equation #3: Both Types WS - Thin Lens Equation #4: Both Types WS - Two-Lens Worksheet WS - Two-Mirror Worksheet TB - 27B: Properties of Light and Refraction TB - Refraction Phenomena Reading Questions

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