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In a displacement method the distance be...

In a displacement method the distance between the object and the screen is `70` cm and the focal length of the lens is `16` cm, find the separations of the magnified and diminished image position of the lens.

Text Solution

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`d = sqrt(D^(2) - 4fd) = sqrt((70)^(2) - 4 xx 16 xx 70) = sqrt(420) = 20.5 "cm"`
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