Inverted

Real

Magnified (bigger)

 $0.38^o$  

 $67.9^o$  

 $22.1^o$   

 $2.66^o$  

Object distance is equal to image distance

Angel of incident is equal to angle of reflection

Virtual image is the image that cannot be formed on a screen

$n\ =\frac{\sin\ i}{\sin\ r}$

Virtual, Inverted, Magnified.

Virtual, upright, same size

Real, inverted, same size

Real, upright, magnified

Always produce virtual images.

Characteristic of image formed depends on the object distance

Distant object will form an image at the focal point.

A type of diverging mirror.

Refraction of light

Diffraction of light

Total internal reflection

1.2 m

0.8 m

2.1 m

0.4 m

A point where an image is formed.

A point where a light ray focuses and intersects.

A point that represents the centre of curvature.

A point that shows the position of an object.

Astronomical telescope

Headlights

Blind corner mirror

Vanity mirror

$36.97^o$

$0.65^o$

$40.18^o$

$49.82^o$

Water enters the diamond and less refraction takes place.

Light cannot enter diamond as it is reflected by water.

Less total internal reflection takes place.

Most of the light ray is diffracted.

Image is smaller than the object

Image is bigger than the object.

Image has the same size as the object.

They are all transverse waves.

Consists of electric and magnetic fields.

Travel at a speed of light.

Require a medium to propagate.

Microwaves

Infrared

Ultraviolet (UV)

X-ray

Heating food.

Remote controller

Luggage scanner

Detecting forgery notes.

UV $\rightarrow$ X-ray $\rightarrow$ Infrared $\rightarrow$ Radio waves

Microwaves $\rightarrow$ Visible light $\rightarrow$ X-ray $\rightarrow$ Gamma ray

X-ray $\rightarrow$ Visible light $\rightarrow$ Infrared $\rightarrow$ Radio waves

Visible light $\rightarrow$ Microwave $\rightarrow$ X-ray $\rightarrow$ Gamma ray

Infrared

X-ray

UV

Visible light

Wavelength increases, frequency decreases

Wavelength decreases, frequency increases

Wavelength increases, frequency increases

Wavelength decreases, frequency decreases

Violet

Blue

Green

Red