Lens (Concave and Convex) Flashcards
1
Q
convex mirror
A
- rays diverge
- virtual focal point
- used for hyperopia (far-sightedness)
2
Q
concave mirror
A
- rays converge
- real focal point
- used for myopia (nearsightedness)
3
Q
what are the 7 colours of the visible spectrum
A
red, orange, yellow, green, blue, indigo, violet
4
Q
what colour refracts the most
A
violet
5
Q
what refracts the least
A
red
6
Q
colour of radio waves and microwaves
A
blue
7
Q
colour of infrared
A
red
8
Q
colour of visible light
A
yellow
9
Q
colour of ultraviolet
A
purple
10
Q
colour of X-rays and Gamma Rays
A
green
