Question

convex lense of focal length 30andconcave lense of focal length 60are placed in contact if object is placed 40cm away from the combination find the position of image​

Answer 1

Answer:

Explanation:

Here, f1=30cm,f2=−60cm

u=−40cm,v=?

1F=1f1+1f2=130−160=160

From −1u+1v=1F

1v=1F+1u=160−140=−1120

v=−120cm

which is the position of the image.

Answer 2

1. Explanation:

thanks my answer plz. koi to thanks de do