Physics2:Light Flashcards
how does light travel
in straight lines
How many colours are there in the spectrum
7
Order the colours in the spectrum
Red, orange, yellow, green, blue, indigo, violet
what is the difference between the angle of incidence and refraction
they are equal
What happens if a light is shone on a green object
red, orange, yellow, blue, indigo and violet are absorbed and green is reflected.
What happens if light is shone on a black object
all 7 colours are absorbed and none are reflected
What happens if light is shone on a white object
all 7 colours are reflected
what is dispersion
where white light is split in to 7 colours
what colour is shown when you look at a white object through a green filter
green
what colour is shown when you look at a white object through a blue and green filter
Black
what colour is shown when you look at a red object through a green filter
black
what direction is light travelling when it goes in a glass block
towards
what direction is light travelling when it exits a glass block
away
