1.) The index of refraction of water is 1.33. If you (or a fish) were under calm
ID: 1779283 • Letter: 1
Question
1.) The index of refraction of water is 1.33. If you (or a fish) were under calm water swimming in the daytime, looking upward you would see a bright circle of light above you at the surface. The circle is because of total internal reflection, and the boundary is where light from below is totally reflected if it is beyond the boundary. What would you see just at the inside edge, where there is the light of the sky coming in?
a.) the bottom of the lake, reflected in the water., becasue of total reflection b.) the horizon of the pool or lake, because rays in the air at that position are horizontal and parallel to the surface c.) an image of yourself, becasue of the law of reflection d.) directly overhead, probably the Sun, because the rays in air at that point are perpendicular to the surface
2.) Snell's law describes the relationship betwee the angle a light ray makes as it leaves a surface, the angle it makes incident on the surface, and the indices of refraction on both sides of the surface. If light incident in air at angle of 30 degrees from the normal onto glass with an index of refraction of 1.5 --
PICK ALL THAT APPLY
a.) there is light relfected back into the air from the surface b.) inside the material, the light leaving the surface is closer to the surface, makes a bigger angle with the normal, than the entering light makes in air c.) the light inside the glass is closer to the normal, makaes a bigger angle with the surface, than the incident light d.) the angle is too steep for light to refract and it is all reflected
3.) Match Maxwell's equations by name with what they describe.
Gauss's Law for Electrictiy a.) no magnetic monopoles
Gauss's Law for Magnetism b.) electric field due to changing magnetic field
Faraday's Law c.) magnetic field due to currents and changing electric fields
Ampere's Law d.) total enclosed charge
4.) Suppose that white light strikes a surface of flint glass at an angle of 60 degrees. The index of refraction of this dense glass for red light is 1.710, for green light is 1.723, and for blue light is 1.735. What is the order of colors you would see in the refracted light? In the reflected light? From the surface up -- Hint: In refraction, the ray deflected the most will be the one farthest from the surface as it leaves.
a.) Refraction: red green blue b.) Refraction: blue green red c.) Refraction: red green blue d.) Refraction: blue green red
Reflection: blue green red Reflection: red green blue Reflection: all the same Reflection: all the same
Explanation / Answer
1. c.) an image of yourself, becasue of the law of reflection
2. a.) there is light relfected back into the air from the surface c.) the light inside the glass is closer to the normal, makaes a bigger angle with the surface, than the incident light
3. Gauss's Law for Electrictiy total enclosed charge
Gauss's Law for Magnetism no magnetic monopoles
Faraday's Law magnetic field due to currents and changing electric fields
Ampere's Law electric field due to changing magnetic field
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.