Question

2.2.
A candle of height 5cm is placed in front
of a plane mirror at a distance of 8 cm on
it, what is the height and location of the
image in the plane mirror ?​

Answer 1

Answer:

ANSWER

Height of object, ho=5cm, object distance u=−30cm, focal length f=−20cm 

Now, from mirror formula :f1=v1+u1

v1=f1−u1

      =20−1+301

      =−601

v=−60cm - image distance 

Magnification, m=−uv=−−30−60=−2

Size of image, hi=m(ho)=−2(5)=−10 cm