Question

An object of height 2 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm . Draw a scale diagram to locate the image. From the diagram, Find the length of the image formed.​

Answer 1

length:

using mirror formula:

1/v+1/u=1/f

1/v+1/15=1/10

1/v=1/10-1/15

1/v=3-2/30

1/v=1/30

v=30cm