Question

An object is placed 5 cm from the first focus of a convex lens of focal length 10cm. If real image forms. Find its distance from the lens. ​

Answer 1

Answer:

v

1

−

u

1

=

f

1

v

1

−

−15

1

=

f

1

or

v

1

=

−15

1

+

10

1

or

v

1

=

30

−2+3

or v=30 cm.

solution