Find the position, nature and size of the image of an object 3 cm high placed at a distance of 9 cm from a concave mirror of focal length 18cm.

Explanation

To find the position, nature, and size of the image formed by a concave mirror, we can use the mirror formula and magnification formula. Let's proceed step-by-step:

### Step 1: Identify the given data
- Height of the object (\( h_o \)) = 3 cm
- Object distance (\( u \)) = -9 cm (negative because the object is in front of the mirror)
- Focal length (\( f \)) = -18 cm (negative for concave mirror)

### Step 2: Use the mirror formula to find the image distance (\( v \))
...