Question

Give the mirror formula & magnification formula with the meaning of symbol.

Answer 1

Magnification (m) = h/h'

And h' is the image height and h is the object height.

A mirror formula can be defined as the formula which gives the relationship between the distance of object 'u', the distance of image 'v', and the focal length of the mirror 'f'.

Answer 2

Explanation:

ANSWER

This equation predicts the formation and position of both real and virtual images in thin spherical lenses. It is valid only for paraxial rays, rays close to the optic axis, and does not apply to thick lenses. Also, it can be determined the curvature ratio of the lens.

(objectdistnce)

1

+

(imagedistance)

1

=

(focallength)

1

focal length= curvature/2

the equations are:

0

1

+

1

1

=

f

1

F=

2

r

where:−

O:− object distance

I:− formed image distance

f:− focal length

r:− curvature radius.

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