UPSEE Solved Model Paper 1

Let object is AB
For image of point 'A'
⇒ 𝑢 = −60cm
f = −20cm

1

v

+

1

u

=

1

f

⇒

1

v

=

1

f

−

1

u

⇒

1

c

=

1

−20

−(

1

−60

)
⇒ v = - 30 cm
For image of point B → u = -40 cm, f = -20 cm

1

v

=

1

f

−

1

u

v = - 40 cm
So, length of point A'B' = 10 cm