concave mirrors Flashcards
(9 cards)
1
Q
Power:
A
𝐹=1/𝑓 where 𝑓= 𝑟/2
2
Q
Ray diagrams:
A
Real/inverted or virtual/upright depending on object position
3
Q
No parallax:
A
Used with pins to find focal length
4
Q
Torch grid method:
A
Image on casing = radius of curvature.
5
Q
Pin and mirror:
A
Move pin until no parallax.
6
Q
Two-pin
A
Short pin object, tall pin behind mirror to find image.
7
Q
Concave mirror =
A
positive power
8
Q
Real images =
A
inverted
9
Q
virtual images =
A
upright
