Question

Question is a 4.5cm needle is placed 12cm away from the convex mirror of focal length 15cm give the location of the image and the magnification describe what happens as the needle is moved further from the mirror what the solve

Answer 1

for location of image,
1/v-1/u=1/f
=>1/v=1/15+1/-12
=(4-5)/60
=>v=-60