Visible Light and Colours

Question 1

Which wavelength and frequency does the red end of the colour spectrum have?

Answer 1

Long wavelength and low frequency

Question 2

Which wavelength and frequency does the violet end of the colour spectrum have?

Answer 2

Short wavelength and high frequency

Question 3

What do opaque objects do?

Answer 3

Absorb some wavelengths of light and reflect other but don’t transmit light.

Question 4

What do white objects do?

Answer 4

Reflect all of the wavelengths of visible light equally.

Question 5

What do black objects do?

Answer 5

Absorb all wavelengths of visible light.

Question 6

What do transparent and translucent objects do?

Answer 6

Transmit light but some wavelengths of light may be absorbed or reflected.

Question 7

Why would a primary coloured object appear black through a different primary coloured filter?

Answer 7

All of the light reflected by the object will be absorbed by the filter.

Question 8

What happens when white light is shone at a primary coloured filter?

Answer 8

Only the light that is the same colour as the filter is transmitted and the rest of the colours are absorbed.