Question

a concave lens of power - 2.0 D is used to formed an image of object size 9 CM kept at a distance of 25 cm from it find the nature size and position of the image formed​

Answer 1

Answer:

Nature-virtual and erect, Position=50/3cm

Explanation:

If power is -2D, focal length is = 50cm

Therefore since the object is between the focus and optical centre, the nature will be erect and virtual.

Position

1/f = 1/v-1/u

1/50 +1/25 = 1/v

3/50=1/v

50/3cm=v