Question

An object of height 4 cm is placed at
distance of 16 cm from a
concave lens of focal length 10 cm find
the poisition size and nature of
the image formed
​

Answer 1

Answer:

h

0

=4cm

u=−15cm

P=−10 D⇒f=

10

−1

m

We know:

f

1

=

V

1

−

u

1

So, −10=

V

1

+

0.15

1

or,

V

1

=−

1

10

−

0.15

1

=−

0.15

1.5−1

or,

V

1

=

0.15

−2.5

or, V=

2.5

−0.15

m

So, m=

u

v

=

2.5×−15

−0.15

=

250

1

m=0.4 cm

or,

4

h

i

=0.4 cm

or, h

1

Answer 2

Answer:

Do you need full process.