Question

An object of height 6cm is placed at a distance of 30cm in front of a mirror of radius of curvature 60cm. Calculate
position and size of image if the mirror is-(i) concave mirror and (ii) convex mirror. Give ray diagram for each case too.

Answer 1

Answer:

Given that,

Focal length f=2R

Radius of curvature R=30

Object distance u=10cm

Height of object ho=2cm

From the mirror formula,

  f1=v1+u1

 −v1=u1−f1

 −v1=101−302

 −v1=303−2

 v=−30cm

Now, the magnification is

  m=u−v

 m=1030

 m=3

 Now, the height of image

  m=hohi

 3=2