Question

An object is placed 2m from a lens. Its image is 1/4th the height of the object and erect. Determine the focal length of this lens

Answer 1

final answer:-

$f=\frac{-2}{3}meters$

or

$f=-0.66\:meters$

given:-

• An object is placed (u) -2m from a lens

• image($hi$) is 1/4th the height of the object($ho$)

• image formed is erect

to find:-

focal length of this lens

solution:-

Answer 2

maihuunknown ne sahi answer diya hai use brainlist bana