Which is correct ?

enter image source here

1 Answer
Ashley H
Aug 11, 2018

#4m#

Explanation:

From the given information we can say,magnification (#m#) of the image is #m=I/O=200/5# (where, #I# is the image length and #O# is the object length.)

Now,we also know that #m=-(v/u)# where #v# and #u# are distance between the lens and image and between lens and object respectively)

So, we can write,

#200/5=-(v/u)#

Given, #(-u)=10 cm#

So, #v=-10×(200/5)=400cm=4m#

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