Optics


   
 
Linear Magnification of Spherical Mirror
Linear magnification is ratio of the size of the image to the size of the object.
 
 
We know,
 
 
Concave Mirror
 
For Real Image
 
using sign convention
 
AlBl = -h2 ; AB = +h1
 
PBl = -V, PB = - u
 
 
For Virtual Image
 
AlBl = +h2 ; AB = h1
 
PBl = +V ; PB = -u
 
 
Convex Mirror
 
AlBl = +h2 ; AB = +h1
 
PBl = +v ; PB = -u
 
 
Note:
 
If m>1, image is enlarged.
 
If m <1, image is diminished.
 
If m is +ve , image is erect and virtual.
 
If m is -ve, image is inverted and real.
 
Other formulae for magnification
 
 
or
 
 
 
 
 
 
 
 
     
   
Get unlimited tutoring in Math, English, Physics, Chemistry, Biology, Algebra, Geometry and all other subjects at $99.99 per month!



Optics