Question

an object of height 5 cm placed at 8 cm from the convex lens of focal length 5cm . calculate , position , nature and magnification and height of the image formed . draw the image formation.​

Answer 1

Answer:

Given, u=-20cm

f=10cm

v=?

We know

f

1

=

v

1

−

u

1

10

1

=

v

1

−

20

(−1)

v

1

=

20

2−1

v=20cm

We know

magnification (M)=

h

o

h

i

=

u

−v

or,

−20

20

=−1=

h

o

h

i

since,h

0

=5cm

so,h

i

=−5cm

nature = real image