Light from candles are natural or artificial light source ?
artificial light source
What are the character of light rays ? straight lines or curve lines
straight line
Each narrow beam of light is called....................
a ray
Identify the source of light in the picture ?
firefly
How can we see things ?
light travels from the light source to the objects. The ligh
Our eyes always have light to see everything
The most important light source
the sun
Things make shadow because they ......................light.
block
bounce
shine
If the power's out, why can't you see ?
because there is no light
Identifu reflected ray and arriving ray in this picture
1 is arriving ray, 2 is reflected ray
Find out the reflected ray and arriving ray in this picture.
A is the arrving ray and B is the reflected ray.
Identify the source of light in this picture ?
street lights