Quiz 11.2 The Refraction of Light

Why is optical fibre so useful?
1. They can transmit thousands of light signals at the same time without interfering with each other
2. They are excellent at preventing light from interfering with electrical signals
3. They are extremely strong and can support a great deal of weight
4. They can transmit telephone communications without heating up
What light phenomenon is utilized in fibre optics?
1. Reflection
2. Wavelength
3. Magnification
4. Frequency
Which statement about refraction is true?
1. Light bends when it passes from one medium to another
2. Refraction is due to changes in the wavelength of light waves
3. The speed of light does not depend on what medium it is traveling through
4. Charges within in a material can speed up light
Refer to the following chart to answer this question.

What is the speed of light through water?
1. 2.26 x 108 m/s
2. 1.33 x 108 m/s
3. 3.00 x 108 m/s
4. 3.99 x 108 m/s
Refer to the following chart to answer this question.

When light travels from air into a ruby what happens to it?
1. It bends toward normal
2. It changes colour from white to red
3. It disperses
4. It speeds up
Refer to the following chart to answer this question.

When light travels from air into ice at an angle of 50° from normal, what is the angle of refraction. Identify air as medium 1 and ice as medium 2.
1. 36°
2. 58°
3. 41°
4. 12°
Refer to the following chart to answer this question.

Light from a point source encounters a medium with a different refractive index (below the grey line) and bends toward normal.

Keeping in mind the first medium is above the grey line in the diagram, what two mediums could this diagram represent?
1. Ethanol, Lucite
2. Diamond, air
3. Quartz, glycerin
4. Water, vacuum
A colourless diamond sparkles with all the colours of a rainbow because of what phenomenon?
1. Dispersion
2. Total internal reflection
3. Magnification
4. Particle interference
The following diagram represents reflection and refraction. The solid black line in the diagram represents the interface between two different media.

Which label in the diagram represents the angle of refraction?
1. label C
2. label A
3. label B
4. label D
Which letter in the diagram represents the reflected ray?
1. label E
2. label D
3. label C
4. label F