Q. 17
Murugan trims his
Answer :
i) Given,
Focal length (f) =-18cm
Object length (u) =-12cm
Image length (v) =?
According to mirror formula,
Thus, the image formed is a virtual image at 36 cm behind the mirror.
ii) The position of the object (Murugan’s face) is of great importance as a concave mirror unlike a convex mirror forms different type of images depending upon the position of the object from the mirror.
Table: Summary of images formed by a concave mirror
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