Question

Calculate the distance of an object from a concave lens of focal length
90cm so that an image is formed at a distance of 30 cm from the lens.
Determine the height of the image if the height of the object is 9 cm.​

Answer 1

Explanation:

f=90cm

u=30cm

ho=9cm

1/f=1/v+1/u

m=hi/ho

Answer 2

Answer:

Hi /ho is Ur correct answe