Radius of curvature of concave mirror is R and a light ray is incident on it parallel to principal axis at a height h above the principal axis. Calculate distance of the point from pole of mirror where reflected ray intersects with principal axis.

Explanation

To solve the problem of finding the distance from the pole of a concave mirror where a reflected ray intersects the principal axis, we can follow these steps:

### Step 1: Understand the Setup
We have a concave mirror with a radius of curvature \( R \). A light ray is incident parallel to the principal axis at a height \( h \) above it. We need to find the distance \( AP \) from the pole \( P \) of the mirror to the point where the reflected ray intersects the principal axis.

### Step 2: Draw the Diagram
Draw a diagram of the concave mirror. Mark the center of curvature \( C \), the pole \( P \), and the principal axis. Draw the incident ray parallel to the principal axis at height \( h \).

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