what is linear magnification?
Asked by maneksingh31 | 25th Aug, 2010, 12:00: AM
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



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 conventionAlBl = -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 = -uNote:
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



Answered by | 26th Aug, 2010, 02:50: PM
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