how do we calculate magnification in concave and convex mirror
Answers
Answer:
we can calculate the magnification in conve by measuring it focal length
in convex we have to measure principal focus
Answer:
In a concave mirror, the magnification is the ratio of the height of the image to the height of the object. The magnification is also equal to the negative of the ratio of the distance of the image from the mirror to the distance of the object from the mirror.
Magnification Physically, we all understand what is magnification. It can be defined as the extent to which the image appears bigger or smaller in comparison to the object size.
It is represented as the ratio of the height of the image to the ratio of the height of the object. Magnification is denoted as the letter ‘m’. Where,
Magnification (m) = h/h’
And h’ is the image height and h is the object height.
Magnification can also be related to the image distance and object distance; therefore it can also be written as:
m = -v/u
Where v is the image distance and u is the object distance.
Hence, the expression for magnification (m) becomes:
m = h’/h = -v/u