Question

27.An object is near a concave mirror of 10.0 cm focal length. The image is 3.0cm tall,
inverted, and 16.0 cm from the mirror. What are the object position and object
height? ​

Answer 1

Explanation:

Object distance u=−36 cm

Focal length of concave mirror f=−12 cm

Using mirror formula :

v

1

+

u

1

=

f

1

Or

v

1

+

−36

1

=

−12

1

⟹ v=−18 cm

Magnification

h

o

h

i

=

u

−v

Or

10

h

i

=

−10

−(−18)

⟹ h

i

=−18 cm

Image formed is real and inverted.