Question

The plane faces of two identical Plano convex lenses each with focal length f are pressed against each other using an optical glue to form a usual convex lens . The distance from the optical centre at which an object must be placed to obtain the image same as the size of object is
A. f/4 B. f/2 C. f D. 2f
Please answer fast as soon as possible.....
Its urgent......

Answer 1

option C. is correct

the focal length will be coinciding each other and both the identical focal length will appear is

1

$\beta e \: \beta \pi \alpha inl \gamma$

hope it helps

Answer 2

c)f

the focal length will coincide each other