Q. 194.4( 18 Votes )

# The image o

Given:

Distance between the object and the image, d = 3 m

Maximum focal length of the convex lens = fmax
For real images, the maximum focal length is given by,

fmax = d/4 …(1)

Where,

fmax = maximum focal length

d = distance between object and image

By putting the values in equation (1) , we get,

fmax = 0.75 m

Hence, for the required purpose, the maximum possible focal length of the convex lens is 0.75 m.

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