Question

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

Answer 1

Answer:

u=−10cm

h

1

=4cm

f=20cm

v

1

−

u

1

=

f

1

v

1

−

−10

1

=

20

1

v

1

=

20

1

−

10

1

=−

20

1

v=−20cm (Image is 20cm in front of the convex lens)

m=

u

v

=

−10

20

=−2

m=

h

1

h

2

=−2

4

h

2

=−2