Question

an image 3cm high is formed in bin whole camera is the magnification is 0.004 find the size of object​

Answer 1

Answer:

Given: h

1

=3cm;u=−14cm;f=−21cm

By lens formula,

v

1

−

u

1

=

f

1

v

1

−

−14

1

=

−21

1

v=−8.4cm

Now, Magnification formula for lens,

m=

h

h

′

=

u

v

h

2

=

14

8.4×3

⇒h

2

=1.8cm

Answer 2

Answer:

Explanation:7.5cm