Question

find out the distance of the image when an object is placed on principal axis at a distance of 10cm infront of a concave mirror whose radios of curvature is 18cm​

Answer 1

Given : u=−10cm    R=−8cm=2f      f=−4cm

To find : v

Solution: From mirror formula

v1+u1=f1

v1−101=−41

v1=10/4−6

v=3−20cm

I hope it helps you my friend