Electromagnetic Spectrum and light Flashcards Preview

Physics > Electromagnetic Spectrum and light > Flashcards

Flashcards in Electromagnetic Spectrum and light Deck (14):
1

What type of wave are Electromagnetic waves?

Transverse

2

What happens when you increase the frequency of an electromagnetic wave?

You increase the energy transferred

3

List the electromagnetic waves

Radio Waves
Mirco waves
Infra Red
Visible Light
Ultra Violet
X rays
Gamma Rays

4

What does red and green light make?

Yellow light

5

What does red and blue light make?

Magenta

6

What does blue and green light make?

Cyan

7

What do filters do?

Let through some colours of light, and absorb the others

8

What is black?

The absence of colour

9

What is white light?

All of the colours of light combined

10

How do we see light?

By light reflecting off the object and into our eyes. The object absorbs all of the light that is not the same colour as it.

11

What is a converging lense?

A converging lense bulges in the middle. Causing parallel rays of light to converge on a principal focus

12

What is a diverging lens?

A diverging lens caves outwards. It causes parallel rays of light to converge outwards.

13

What is the focal length of a lens?

The distance between the centre of the lens and the principal focus

14

What affects the focal length of a lens?

The more powerful the lens, the shorter the focal length. Because the lens is making the rays of light converge more.