Question

use graph paper. a square of each side 3cm​

Answer 1

Answer:

Height of the object h

o

=3 cm

Width of the object b

o

=3 cm

Given : u=−25 cm and f=−10 cm

Using mirror formula

v

1

+

u

1

=

f

1

Or

v

1

+

−25

1

=

−10

1

⟹ v=

15

−25

cm

Magnification

h

o

h

i

=

u

−v

∴

3

h

i

=

25

−25/15

⟹ h

i

=2 cm

Similarly, b

i

=2 cm

Thus area of image formed A

i

=h

i

b

i

=(2)(2)=4 cm

2