Question

find the focal length of the convex mirror if image distance is 4cm and object distance is 16cm ​

Answer 1

Answer:

1/f=1/v+1/u here object distance is always with( -) sign then 1/f=1/4+(-1/16) then 1/f=1/4-1/16 then 1/f =4-1/16 then 1/f=3/16 then f is 16/3