- #1
jishnu
- 73
- 15
We have the mirror equation
(1/v) +(1/u)=(1/f)
and the lens equation
(1/v) - (1/u)=(1/f)
Where
u =object distance from the mirror/lens
v =image distance from the mirror/lens
f =focal length of the mirror /lens
My doubt is, when we are doing some problems in optics using these equations should we to apply the approved sign conventions to these physical values ie;
Standard sign conventions:
the distance measured to the left and bottom from the pole of the lens/mirror is - ve and distance measured to the right and top from the pole of the lens is +ve.
(1/v) +(1/u)=(1/f)
and the lens equation
(1/v) - (1/u)=(1/f)
Where
u =object distance from the mirror/lens
v =image distance from the mirror/lens
f =focal length of the mirror /lens
My doubt is, when we are doing some problems in optics using these equations should we to apply the approved sign conventions to these physical values ie;
Standard sign conventions:
the distance measured to the left and bottom from the pole of the lens/mirror is - ve and distance measured to the right and top from the pole of the lens is +ve.