A converging mirror forms a real image of height 4 cm of an object of height 1 cm placed 20 cm away from the mirror:
(i) Calculate the image distance.
(ii) What is the focal length of the mirror?
A concave mirror is a converging mirror.
We have to find the distance of the image 'v' and focal length of the mirror 'f'.
Thus, the distance of the image 'v' is 80 cm.
Now, using the mirror formula, we get
Thus, the focal length of the concave mirror is 16 cm.
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