An object is placed perpendicular to the principal axis of a convex lens of focal length 18 cm. The distance of the object from the lens is 27 cm. Find the position and nature of the image formed.
Given,
Focal length of convex lens = 18 cm
Object distance u = -27 cm
Image distance =??
We know that lens formula is:
Substituting the values given:
v = 54 cm
Since v is positive it means image is formed behind the lens. So, the image is real.
magnification = -2
Height of image = -2 ×height of object
Thus image formed is twice the size of object but –ve sign indicates that it is inverted.
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