Refraction, Snell's Law, Dispersion

Snell's law is...

• when the sine of second angle is equal to the refractive index of the second

• when the sine of first angle is equal to the refractive index of the second

• when the sines of the incident and refractive angles are proportional (constant)

• when only the sine of the incident angle is proportional (constant)

Is the line that is perpendicular to the separation of the 2 media.

• refractive angle line

• Boundary line

• Incident angle line

• Normal Line

Speed of light is

• speed of electromagnetic wave in vacuum

• speed of electromagnetic wave in air

• speed of electromagnetic wave in a light medium

• None

Refraction of any wave is ...

• just when any wave slows down

• When incident angle is reflected completely

• just when any wave slows down and changes its direction

• When incident angle slows down

The breaking up of white light into its component .

Based on the statement given, name the process that takes place in the white light.

• Dispersion

• Reflection

• Refraction

• Diffraction

How many components of white light?

• 5

• 6

• 7

• 8

These are all colours of spectrum except

• indigo

• blue

• black

• green

Why is red light is at the top whileviolet at the bottom of the spectrum?

• Violet light has the medium speed so it is refracted the least.

• Red light has the slowest speed so it is refracted the least

• Violet light has the highest speed so it is refracted the least

• Red light has the highest speed so it is refracted the least.

Violet light is refracted the most by a glass prism as the light travels the ................ through the glass prism.

• Slowest

• Fast

Light is able to pass through __________________ materials

• Transparent

• Dull

• Shiny

• Opaque