Question

An object is placed at a distance of 20 cm from a convex mirror of focal length 25 cm. Find the position of image and magnification also.​

Answer 1

Answer:

Here we have,

U(object distance) = -20cm

F(focal length) =+25cm

Now we will apply the mirror formula ie

1/f=1/v+1/u1/f=1/v+1/u

1/25=-1/20+1/v

1/25+1/20=1/v

Lcm(25,20) is 100

4+5/100=1/v

9/100=1/v

V=100/9

V=11.111cm

Position of the image is behind the mirror(11.111cm) and the image is diminished in nature.