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Question -

An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm.



Answer -

Draw the ray diagram and find the position, size and the nature of the image formed.


Answer
Height of the Object, h0 = 5 cm
Distance of the object from converging lens, u = -25 cm
Focal length of a converging lens, f = 10 cm
Using lens formula,
Thus, the image is inverted and formed at a distance of 16.7 cm behind the lens and measures 3.3 cm. The ray diagram is shown below.

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