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in displacement method to find the focal length of converging lens, heights of images formed by a converging lens are 4cm and 16cm. height of the object is?

in displacement method to find the focal length of converging lens, heights of images formed by a converging lens are 4cm and 16cm. height of the object is?

Grade:11

2 Answers

Ram Aggarwal
38 Points
8 years ago
Here, the size of Image 1=4cm
and the size of image 2=16cm
According to the displacement method,
Size of object= Geometric mean of Image 1, Image 2
therefore size of object = geometric mean of 4,16
that is equals to 8.
Hence, the height of the object is 8cm
Nitesh
15 Points
5 years ago
O=i1i2 whole underroot
o=4*16whole under root
O=underroot64
o=8..............so 8 is the height of object

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