Question

an object is placed at a distance of 36 cm from a concave mirror of focal length 12 cm find the image distance ​

Answer 1

Answer:

      v = -18cm

Explanation:

object distance - u = -36cm

focal length - f = -12cm

image distance - v

1 / v + 1 / u = 1 / f

1 / v = 1 / f - 1 / u

1 / v = u - f / uf

v = uf / u - f

v = -36 × -12 / -12 + 36

v = 36 × 12 / 24

v = 36 / 2

v = -18cm

Image is formed on the same side of the object