Question

State the rules used foo doawing
pay diagoams for the foomation ofan
image by a concave lens. .​

Answer 1

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The rules used for drawing ray diagrams for the formation of an image by a concave mirror are:

➪ Rule 1: If the incident ray is parallel to the principal axis then the reflected ray passes through the focus of the concave mirror.

➪ Rule 2: If the incident ray passes through the focus of the concave mirror, the reflected ray is parallel to the principle axis.

➪ Rule 3: If the incident ray passes through the centre of curvature of the concave mirror, the reflected ray traces the same path.

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