Question

yar 3 mkrdinotor folow ker reha ha meri to kis mut khrab mordinoters to sara qustion and answe delete ker de ga ​

Answer 1

Answer:

Since, object-screen distance is double of object-lens separation, the object is at a distance of 2f  from the lens and the image should be of the same size of the object. 

So 2f=32⇒f=16 cm

Height of image = Height of object  =2 cm