Question

8M II. Answer the following 1. An object 6cm in size, 10cm in front if concave mirror, of focal length 5cm, find image distance and magnification ?​

Answer 1

Answer:

Correct option is

A

1cm

 Given,

Size of object  ho=5cm

Size of the image  hi=?

Focal length,  f=−10cm

Object distance  u=−60cm

Image distance  v=?

Using mirror formula, 

f1=v1+u1

−101=v1+−601

v1=60−6+1

v=−12cm

Hence, the position of the object is at 12 cm in front of the mirror.

Magnification (M)=hohi=u−v=−6012=−0.2

hi=−0.2×ho

hi=−0.2×5=−1cm

Height of inverted image is 1cm.