Physics Lenses Flashcards
0
Q
Convex lens
A
Converging lens
1/u + 1/v = 1/f
Eg
Magnifying glass,
1
Q
Concave lens
A
Diverging lens
1/u - 1/v = -1/f
Eg
Door peepholes
2
Q
Power of kens
A
Its ability to converge/ diverge rays P = 1/f Untit - m(-1) Shorter focal length = more power P= p1 + p2 (NOT for f)
3
Q
Long sighted
A
Can see far but can’t see near things
Converging/convex lens
(+)
4
Q
Short sighted
A
Can see near but can’t see distant
Diverging/ concave kens
(-)
