A small candle `2.5 cm` in size is placed `27 cm` in front of a concave mirror of radius of curvature `36 cm`. At what distance from the mirror should a screen be placed in order to receive a sharp image ? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved ?

Explanation

To solve the problem, we will follow these steps systematically:

### Step 1: Determine the Focal Length of the Mirror
The focal length (f) of a concave mirror is given by the formula:
\[ f = \frac{R}{2} \]
where R is the radius of curvature.

Given:
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