Question

a convex lens of focal length 20 cm forms a virtual image of height 1 cm at a distance of 16 cm behind the mirror. what is the height of the object?​

Answer 1

Answer:

MARK BRAINLIST

Explanation:

Let H’ = Height of object

H= Height of image.

Then , H = 2 H’

M ( magnification ) = -V / U ….. (1.)

Also, M = H / H’ ….. (2.)

Combining 1 and 2

- V / U = 2H’ / H’

- V / U = 2

U = - V / 2