A point object is placed 60 cm from the pole of a concave mirror of focal length 10 cm on the principal axis.
Find:
a. the position of image.
b. If the object is shifted 1 mm towards the mirror along principal axis, find the shift in image. Explain the result.

Explanation

To solve the problem step by step, we will use the mirror formula and the magnification concept for concave mirrors.

### Step 1: Identify the given values
- Focal length (f) of the concave mirror = -10 cm (negative because it is a concave mirror)
- Object distance (u) = -60 cm (negative as per the sign convention)

### Step 2: Use the mirror formula to find the image distance (v)
The mirror formula is given by:
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