An object 2 cm tall stands on the principal axis of a converging lens of focal length 8 cm. Find the position, nature and size of the image formed if the object is:
(i) 12 cm from the lens
(ii) 6 cm from the lens
Height of object = 2 cm
Focal length = 8 cm
(i) Object distance (u)=12 cm
Using lens formula,
Image distance (v) = + 24 cm
; The image is 24 cm behind the lens ; The nature of the image formed is Real and inverted ;
Height of image = 4 cm
(ii) Object distance (u)= 6 cm
Using lens formula,
Image distance (v) = - 24 cm ; The image is 24 cm in front of the lens ; The nature of the image formed is Virtual and erect ;
Height of image = 8 cm
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