Question

an object is situated at a distance of f/2from a convex lens of focal length f.distance of image will be...

Answer 1

i thik f/1 because the the ray enter from infinity the image from in focal length. .

Answer 2

Answer:

Explanation:

Given :

u= -f/2

v=?

we know,

1/v - 1/u =1/f [ Mirror formula]

:. 1/v= 1/f +1/u

1/v= 1/f -1/(f/2)

1/v= 1/f-2/f

1/v= -1/f

:. v= -f