how to find the type of mirror when magnification is given? in a short cut method
Answers
if magnification is negative then image will be inverted
if magnification is positive then image will be erect
so if we consider both of the points we get inverted image most of the times in concave mirror so we can conclude that if magnification is negative then it is concave mirror .
but if the magnification is positive then it could be either the case of concave mirror or convex mirror for concave when object is between pole and focus then magnification will be positive or otherwise it will be convex mirror
Answer:
The magnification of a mirror is -1. Hence, the image formed is real and inverted.
This can be deduced from the formula,begin mathsize 12px style straight m equals straight h subscript 2 over straight h subscript 1 end style While considering image formation, h1 is always positive. So, this gives us h2 as negative. Hence, the image is real and inverted.
Now, the mirror which forms a real image is a concave mirror. So, the mirror is concave, the object is placed on the left-hand side of the mirror and so is the image obtained.
Therefore, we can conclude that the image is real, inverted and of the same size as the object as the magnitude of magnification is 1.