Light

Question 1

Materials

Answer 1

Reflect, absorb or refract.

Question 2

Three classes material

Answer 2

Transparent, translucent and opaque.

Question 3

Total internal index

Answer 3

Total internal reflection is the phenomenon that occurs when a light ray bends so far away from the normal that it reflects away from the less dense medium instead of refracting.

Question 4

Critical angle

Answer 4

The critical angle is the angle of incidence that results in an angle of refraction of 90

Question 5

Lower refractive index

Answer 5

When a light ray moves into a medium with a lower refractive index at the critical angle, the ray will travel along the boundary of the two media.

Question 6

Colour spectrum

Answer 6

A rainbow occurs when white light is split into different colours to produce

Question 7

Highest frequency

Answer 7

Red has the highest frequency and the longest wavelength

Question 8

Lowest frequency

Answer 8

Violet has the lowest frequency and the shortest wavelength

Question 9

Dispersion

Answer 9

The separation of white light into colours or of any radiation according to wavelength.