Question

At what distance from the concave lens of focal length 20 cm, should a 6 cm tall object be placed

so that it forms an image at 15 cm from the lens? determine the size of the image formed. Also,

draw the ray diagram.​

Answer 1

Answer:

I am not able to draw your diagram

Explanation:

concave lens

Focus-20

h of object=+6

distance of image(v)=-15

by lens formula

1/v-1/u=1/f

after calculating

u=-60

now m=v/u=h2/h1

-15/-60=x/6

height oh image is 3/2or1.5Ans