Question

3. An object is placed at a distance of 60 om from a concave lens of focal length 30an. What will
be the distance or Image from the lens? List the characteristics of the image for med.​

Answer 1

Answer:

90cm

Explanation:

by using lens formula 1/f=1v-1/u

by using lens formula 1/f=1v-1/uhere f=30cm,u=60cm

by using lens formula 1/f=1v-1/uhere f=30cm,u=60cm1/30=1/v - 1/60

by using lens formula 1/f=1v-1/uhere f=30cm,u=60cm1/30=1/v - 1/601/30+1/60=1/v

by using lens formula 1/f=1v-1/uhere f=30cm,u=60cm1/30=1/v - 1/601/30+1/60=1/v1/90=1/v

by using lens formula 1/f=1v-1/uhere f=30cm,u=60cm1/30=1/v - 1/601/30+1/60=1/v1/90=1/vV=90cm